With a few hours before Brandon and Kelly's wedding, they continue to feel uncertain about the path they are on. Jim and Cindy Walsh arrive in town from Hong Kong to help plan Brandon and Kelly's wedding. Meanwhile, Valerie finally decides to get an AIDS test after Johnny confesses to her that he happens to be HIV-positive, and she asks David to come along with her for emotional support. Steve becomes dateless for the wedding when Sarah decides to go back to her husband after witnessing her friend's messy break up. After the caterer, Jacob, saves Donna's life, Donna agrees to go on a pretend date with him to make his ex-girlfriend jealous. This makes Noah jealous.

Dylan whisks Kelly away on a plane to Mexico to be with her, while he uses the trip to smuggle heroin into the USA for his own use. Gina continues to woo Dylan to know him, while Matt becomes jealous over Dylan's constant presence around Kelly. Meanwhile, the Brian Setzer Orchestra is featured at an AIDS-benefit dance marathon at the After Dark where Steve overextends himself when he inadvertently pledges $12,000 to sponsor a couple who turns out to be his former fraternity brother, Muntz, and his wife. Also, Sonia's girl gang member friends affect Donna's business at the boutique shop "Now Wear This!" by their presence. When the store is robbed one night, the missing Sonia becomes the chief suspect. Noah also asks Gina to help him and Nat plan Donna's 24th birthday party for Christmas Day, where Gina has a little too much to drink and finally reveals her true contempt feelings about Donna in front of everyone.