Annie becomes somewhat angry at Naomi whom has tracked down their real biological half-brother Mark Holland, a local chef who owns a gourmet food truck and Naomi tries to institute herself into Mark's life by holding a CU Food Truck Cook-Off competition where Wolfgang Puck is judging. Meanwhile, Liam experiences some symptoms of post-traumatic stress disorder while preparing to testify against Ashley, but he continues to refuse to talk about his feelings or deal with them. Navid falls further into the Cronos society's nefarious doings when he learns that Campbell runs a "cheaters club" in exchanging test answers to finals. Also, Silver becomes more overbearing with her surrogate Michaela whom begins to resent being Silver's pampering. Backlisted by the music industry, Adrianna is asked to substitute as a lead singer for a band in a Battle of the Bands competition at CU which Annie throws for Dixon who is looking for new fresh talent.

Naomi tries to bond more with Mark as she helps him prepare for the opening of their own restaurant, but soon discovers that the preparation and cooking of food is more hectic then she imagined. Dixon persuades Michaela to join his record label as his new talented star and asks her to sing at Naomi and Mark's restaurant grand opening party. Meanwhile, Annie begins having romantic feelings for Liam once again as she continues to ghost write her life story, while at the same time Liam tries to brew his own type of beer which gets a negative reaction from everyone who drinks it. Elsewhere, Navid is asked by Campbell to escort his fiancée around where Navid accidentally discovers that Campbell is using Navid as a shield so he can cheat on her. Also, Silver and Adrianna decide to use Mark's old food truck as a documentary-on-wheels set where they try to interview random people with their life problems.

Liam decides to open his own custom surfboard shop for women, but things get complicated when he becomes romantically involved with his first investor; a wealthy young woman named Sydney who is married. Meanwhile, Naomi tries to convince Mark to stay in Los Angeles after he receives an offer to be head chef at a restaurant in New York, while Annie feels that Naomi is tying Mark down and plots a scheme to make him leave after learning that Mark has a meeting of minds with Adrianna. Elsewhere, Dixon convinces Silver to direct Michaela's first music video before she gets pregnant but they learn that the scheduling date for the video is on the day of Michaela's insemination appointment. Also, Navid tries to land a prestigious marketing job by trying to impress his uptight would-be employer, Brock Page.

When Naomi is hired by a wealthy client to plan his wedding, Adrianna suggests they take a girls night out to forget their life problems which takes a sudden turn when (in a homage to 'Dude where's my car?' and 'The Hangover'), Naomi wakes up the next with no memory of the night before and finding out she's married. She teams up with Adrianna (who now has blond streaks) and with Silver to retrace the events of the evening before as well as to look for a missing Annie. Silver breaks the pact she made with Adriana and sleeps with Mark. Meanwhile, Dixon (at Mark's suggestion) hooks up with a bar girl to move on only to find out he has feelings for Michaela, as they spend more time together. Elsewhere, Liam secretly discovers that Campbell (whom is the stepson of Sydney) is plotting to frame Navid for the Cronos Society's cheating scam and he decides to socialize with the Cronos group to get close to them in order to find a way to clear Navid's name.

Jordan asks Naomi to plan a launch party for the latest hot writer, known as Author X, which forces Annie to admit her identity to Naomi. Silver worries that Adrianna is not okay that she is dating Mark. Meanwhile, Dixon finds out that Michaela has feelings for Navid.

Annie's planning to public that she's the author of her book. But Patrick, the man who paid her for sex, is worried that if she comes out, his family will learn about them so he threatens her to remain anonymous. But when Dixon learns of his threat, he goes to Patrick and tells him that he stands by Annie. Meanwhile, Liam and Navid try to get a young female surfer, named Cassie, to be their spokesman for their surfboard company but she asks for something difficult. So Navid turns to Adriana for help. Also, Naomi goes to New York to meet Jordan's mother but she knows all about Naomi. Michaela catches Navid and Adrianna during an intimate moment. Silver is still unsure about where she stands with Mark.

When Mark gets arrested for drug possession, Naomi calls on Jordan for help in which he calls in a favor from his mother. But Cheryl's one condition is that Jordan must end things with Naomi. Naomi then tries to hide the fact about Mark's arrest from his ex-wife and estranged son and daughter by throwing a party for them. Meanwhile, Annie must deal with Liam's growing anger stemming after the fallout of Liam being in her book is made public. Michaela catches Navid and Adrianna during an intimate moment. Silver is opposed to Michaela signing a recording contract with Dixon.