Navid y Adrianna fantasean sobre su futuro. Cuando por fin les cuentan a los padres de Navid que han decidido pasar el resto de su vida juntos, estos no reaccionan como ellos esperaban. Silver y Dixon se adaptan al nuevo instituto de Silver, mientras los Wilson intentan adaptarse a tener a Naomi viviendo en su casa. Naomi convence a Annie para que salgan de dobles parejas con el amigo de Liam, pero la cita termina de una forma totalmente sorprendente. Cuando aparece su hermana mayor, Naomi no se imagina hasta qué punto Jen va a provocar un cataclismo en Beverly Hills.

Adrianna y Navid anuncian sus planes de boda a sus amigos, pero éstos no reaccionan como ellos esperaban. Para apoyar a sus amigos, Naomi, Annie y Silver organizan una fiesta de regalos para Adrianna, mientras Dixon, Ethan y Liam le organizan a Navid una despedida de soltero en un club de striptease. Ahora que ha vuelto a la ciudad la hermana mayor de Naomi, Jen, deciden vivir las dos juntas, y tratan de convencer a su escandaloso padre de que les permita recurrir al fondo de Naomi para mantener su lujoso estilo de vida. Ryan y Jen se encuentran por casualidad en el Peach Pit y mantienen una conversación llena de mentiras que los lleva a quedar para cenar juntos.

El baile temático del West Bev está lleno de sorpresas, pero antes de inaugurarlo, Harry advierte a todos los alumnos que si organizan alguna fiesta clandestina después del baile se meterán en un lío. Naomi descubre que Jen ha dejado sin saldo su tarjeta de crédito comprando muebles para su nueva casa, pero se olvida de todos sus problemas cuando Liam la invita a ir al baile con él. Mientras, Liam sigue esperando a que Annie muestre su verdadera cara, pero para demostrarle que se equivoca con ella, ésta acepta cuando Charlie, un chico rarito amante del teatro, la invita al baile. Kelly intenta advertir a Ryan acerca de la enrevesada personalidad de Jen, pero él piensa que lo hace solo porque está celosa. Navid le echa en cara a Ty durante una pelea que haya abandonado al hijo que va a tener con Adrianna, pero cuando Adrianna se pone de parto se marcha corriendo para estar a su lado. Dixon no se esperaba ser candidato a Rey del Baile, y Silver se sorprende aún más cuando tiene la oportunidad de decir lo que piensa delante de sus compañeros. Con la participación de Lori Loughlin y Dustin Milligan.

Adrianna y Navid pasan la noche del baile en la sala de partos y Brenda aparece para apoyarlos. Naomi y Liam se han confesado lo que sienten de verdad y ella ha decidido organizar una fiesta en su nueva casa después del baile, a pesar de la desaprobación de su hermana Jen. Naomi llega tarde y busca a Liam. Se queda sin habla cuando lo sorprende justo después de haberse acostado con otra en su propia cama. Furiosa, Naomi acusa a Annie de haberse acostado con Liam, lo que hace que Annie explote y se marche de la fiesta hecha una furia. Poco después hará algo que podría torturarla durante toda la vida. Dixon y Ethan se pelean cuando Dixon acusa a Ethan de estar enamorado de Silver. Harry y Debbie se cuelan en la fiesta pero se van temprano para apoyar a Adrianna en el hospital, junto con Kelly.

The twisted Naomi continues her personal quest to destroy Annie's personal and professional life by spreading a false rumor about the existence of a nude photo of Annie, which causes a further divide between Annie and Dixon, as well as Annie's parents who continue to worry about her continuing slide down a dark path. Meanwhile, Liam decides to defy his stern and semi-abusive stepfather and try out with Dixon and Teddy for a spot on the school's surfing team. Elsewhere, Ryan worries about his romance with the manipulative Jen who begins to show off her true colors to him.

Dixon and Sasha continue their whirlwind romance despite his friends advice that he's moving too fast with it. That weekend, Dixon and Sasha drive up to Napa's Wind Country to sample some wine. But on the return trip, a flat tire leads to the discovery of a car trunk full of pornography, and a series of lies that Dixon makes up. Annie's new confident attitude quickly disappears when she realizes that Jasper, a new student at West Beverly, is nephew of the derelict that she hit on prom night. Navid assigns Silver and Gia to interview Jasper for a news piece about his uncle whom was a student at West Beverly, and who left behind a $100,000 inheritance to the school. Annie tries to befriend Jasper who confides in her about how his uncle lost everything, ending up homeless, and of Jasper's uncertainty with it all. Elsewhere, Navid continues to grow insanely and immaturely jealous over Adrianna's friendship with Teddy, with whom she confides about her uncertainty with Navid and of his envy. Elsewhere, Liam finally finds a way to get revenge on the psychopath Jen to make her reveal the truth to Naomi about her seducing him that night of the prom party when he discovers that Jen scammed a fortune out of a French husband that she married for money. But Jen has other ideas to slither out of the predicament she's in.

Both Kelly and Silver deal with the shocking news that their mother, Jackie, is dying of breast cancer. Kelly doesn't want to be sucked back into her mother's bad behavior which continues to persist, but Silver feels differently and wants to re-bond with Jackie. Meanwhile, Navid is devastated when Adrianna tells him that she needs time alone, but she turns to Teddy for attention. Jen continues to manipulate Naomi with her charming personality and manages to convince Naomi to lend her a large amount of cash which Jen plans to use to invest in a race horse. Elsewhere, Jasper rescues Annie from a bad date and the two become fast friends. Also, Harry, seeking to get away from problems at home, accompanies Ryan to a bar for some guy time and attempts to be his wing man when Ryan wants to move on from Jen.

Navid and Blaze News employee, Gia, launch an investigation into student drug use at West Beverly, which leads them to Annie's boyfriend, Jasper, over his history of past drug use which he claims to be over with. While Annie wants to believe Jasper's side of the story, she becomes doubtful when both Navid and Gia tell her that Jasper has always been using. In the meantime, Navid receives dating advice from Samantha Ronson. Liam gives up on trying to win back Naomi, and seeks company with Ivy at the Edison while Teddy sets his sights on her as well. Worried that Adrianna will relapse into drugs, Naomi and Silver enlist Navid's assistance to talk to her, but he is too consumed by his ego and jealousy to care about her anymore. Meanwhile, Dixon reveals his situation with Sasha to Debbie and Harry, prompting Debbie to do some investigating to see if Sasha is telling the truth. Also, Jen and Ryan meet up with Pharrell to watch a performance of N.E.R.D.

Kelly continues to support Silver as she deals with Jackie's declining health, despite that she is conflicted about whether or not she can forgiver her mother for the life-long pain and abuse she caused to both her and Silver. Navid confronts Adrianna about her renewed drug use, but this time, she rudely tells him off for turning his back on her. Meanwhile, Harry and Debbie are surprised when Annie informs them she would like to invite Jasper over for dinner at their house. Despite Annie telling Jasper to be on his best behavior, the dinner proceeds very uncomfortably for everyone. Dixon, still alienated and upset with his entire foster family, especially Debbie over her handling of the Sasha situation, declines to join them, and instead teams up that night with Ivy and Navid to set a plan for Liam to tell Naomi the truth about Jen despite knowing that Naomi will not believe them, even with evidence. Elsewhere, Ryan and Jen's relationship is taken to a new level when he convinces her to go on a weekend camping trip. Also, Naomi and Jamie's secret romance is finally found out when Richard and his mother walk in on them in Richard and Jamie's dorm room which finally forces Naomi to come clean about her plans to get accepted into CU.

Liam, Dixon, and Ivy learn that Naomi and Jen will be attending a horse race to watch the racehorse that Jen bought with Naomi's money, and the three of them devise a crafty and very complex plan to finally reveal the truth to Naomi about her evil sister. Ryan also tags along with Jen to the races, and inadvertently learns how Jen acquired the racehorse used to win the race. Meanwhile, Annie and Jasper sneak out to go on a Saturday date even though Harry and Debbie have grounded her for her growing misanthropic attitude. Navid wakes up in the hospital after his "accident" with no memory of who pushed him down a flight of stairs. Adrianna visits Navid and following her conversation with him, makes a life-changing decision about her addiction to pills. Elsewhere, Silver and Teddy bond over the loss of both of their mothers and unexpectedly get close to each other.

The gang is preparing for the SAT's when Silver disagrees with Teddy's decision to skip college to focus on his tennis career and things grow even more tense when she meets his movie star father, Spence. As a result of falsely accusing her faculty adviser of sexual harassment, Naomi is now required to complete community service and publicly apologizes to her peers for the trouble she has caused. Meanwhile, Liam and his father, Finn, reconnect and attempt to rebuild their relationship as Liam moves in with him. Navid and Dixon host an underground gambling party that results in Dixon quickly becoming out of control with betting and he ends up owing Teddy's father's bookmaker, Mark, a lot of money. Debbie reveals to Harry that her yoga instructor made a pass at her, which forces the two to finally discuss their recent problems. Annie, aware of her parents marital troubles, turns to Liam for support. At the end, Naomi gets an unpleasant surprise when her psychotic and revenge-seeking sister, Jen, returns to Beverly Hills, with her French husband in tow, where they announce that they are the new owners of the Beverly Hills Beach Club.

Teddy invites Silver over for dinner at his house so she can meet his father, but things doesn't go as well as planned when Spence openly disapproves of her. Meanwhile, Naomi finds herself at odds again with her sister Jen when she begins giving Naomi a very hard time as she continues her community service work at the Beach Club. Navid realizes he still has feelings for Adrianna after she asks for his help to write a song as she prepares a solo singing career. Also, Annie learns of her parents problems marital troubles and thinks that their marriage is doomed.

Adrianna's new romance with pop star Javier continues to blossom, while Navid continues to work up enough courage to tell her how he feels. Jen has taken control of Naomi's finances and puts her on a tight budget, resulting in an instant meltdown by Naomi. Without her credit cards, Naomi is too distracted to realize Liam is in need of support to deal with the departure of his father, so he turns to Annie for comfort. Despite Spence's suggestion, Teddy refuses to end his relationship with Silver, and the two decide to spend the night together. Ivy invites Dixon to spend the summer in Australia with her and Laurel, but the idea doesn't go over well with his parents. Harry and Debbie's problems escalate when she finds out that Harry has been hiding Dixon's gambling issues from her. Meanwhile, Jasper returns to resolve things with Annie.

En el final de la segunda temporada, después de pasar tiempo con Liam y ver su valentía al confesar su robo a sus padres, Annie encuentra el valor para confesar a sus padres sobre su atropello y fuga. Jasper se pone celoso por la cercanía entre Liam y Annie y prende fuego al barco de Liam, lo que lleva a una pelea entre Liam y Jasper. Naomi revela secretamente a Ryan que el bebé de Jen es suyo, y Ryan, enfadado porque Jen no le permite estar en la vida del bebé, conduce borracho y arruina el letrero de la escuela. Dixon e Ivy atraviesan un momento difícil después de que él le cuenta sobre el beso con Silver, pero la verdadera decepción llega cuando descubre que no puede ir a Australia con ella. Adrianna y Navid tienen una reconciliación pública y Adrianna debe decidir si hacer una gira de un año con Javier. Silver decide dejar la decisión de si Teddy puede manejar una relación y una carrera de tenis en sus manos, pero se enfada cuando descubre que su padre intentó sobornar a Silver para que terminara la relación. El episodio termina con Naomi siendo aprovechada por un cierto profesor, y se da cuenta de la desesperación de la situación porque ya lo ha acusado falsamente de acoso antes.

Naomi finds out she can now access the money in her trust fund, so she decides to throw a giant birthday party where The Honey Brothers perform a few songs. Dixon, Navid and Liam decide to take Oscar out for a night on the town, but their party ends when Ivy finds a Facebook photo of Dixon doing a body shot off a girl. Annie has an instant connection with Charlie, a guy she meets at a coffee shop, but seems more interested in exploring her relationship opportunities with Liam. Jen is forced to go on bed rest until she delivers the baby and has no choice but to allow Ryan into her life. Silver confronts Teddy about his drinking problem.

Silver, Naomi and Adrianna craft a plan to seduce Mr. Cannon and prove that he raped Naomi, but they underestimate his ability to control the situation. Teddy and Ian are forced to do manual labor as punishment for fighting. Dixon fears for his life and pushes Ivy away, leading her straight into the arms of Oscar. A pregnant Jen seeks to hire a new assistant and Debbie applies for the job.

New parents Jen and Ryan find out about Naomi's rape and Jen decides to take matters into her own hands. Ryan encourages Naomi to come forward even though his own job may be in jeopardy. Victor arranges a photo shoot for Adrianna and instructs her to go topless, while Navid and Silver watch in shock. Annie discovers that Charlie has a dark and disturbing side when she sneaks in to observe a staged reading of his play. Liam lands a job working shirtless in the window and on the sales floor of a clothing store. A mysterious customer offers him an opportunity he can't refuse. Dixon apologizes to Ivy for breaking up with her but doesn't realize that Ivy decided to lose her virginity to someone else. Oscar confronts Laurel and Ivy with shocking news about his past.

Adrianna has to un-invite Navid to her magazine premiere party after Victor arranges for her to go with Joe Jonas to boost her image. Annie and Dixon visit their dad but are shocked when a woman answers the door. A series of mishaps lead Jen to conclude that she is a bad mother, so she makes a decision with Ryan and her son's best interest in mind. Naomi and Ivy team up to seek revenge on Oscar with a plan that involves skinny-dipping in the Beach Club pool. Navid discovers that his father may be using underage girls in his porn films and convinces Silver to go undercover.

Annie convence a Marla de asistir al estreno de una película de Hollywood de una de las antiguas películas de Marla, mientras Ryan tiene una visita inesperada y Teddy descubre que Marco le ha mentido y comienza a preguntarse si le está siendo infiel. Naomi descubre que Max fue aceptado en una universidad en otro estado, mientras Silver tiene una crisis después de recibir algunas noticias perturbadoras que llevan a Navid y Dixon a organizar una intervención.

In an effort to put her inheritance to good use, Annie volunteers to organize a big charity fundraiser.

Naomi's sister Jen arrives with her son for a surprise visit. Adrianna and Dixon land a meeting with a major movie producer to discuss music on his next film, but are sabotaged by Vanessa. Meanwhile, Silver gets accepted into New York University and Ivy attracts attention in the underground scene when she switches to a less conventional style of art.

Naomi is convinced that Annie's new business partner P.J. is the perfect man for her, but discovers her sister Jen is also interested in him.

Dixon se desmaya mientras discute en el estudio de grabación con Adrianna. (los invitados especiales incluyen a Manish Dayal y Robert Hoffman)