The gang arrives back in LA where Eric works to fulfill his new duties as Vince's manager, while dealing with Ari who is pushing Vince to start a new movie.
Vince resists Ari's attempts to get him to sign on for the new Aquaman film; Eric cheats on Kristen and Drama develops calf envy.
Vince begins to change his mind about playing Aquaman after he falls in love with one of Marlon Brando's old homes and the guys prepare for a party at the Playboy Mansion.
Ari and Eric scramble to seal the deal on the Aquaman movie for Vince and Drama considers getting his calves augmented.
Ari attempts blackmailing Dana in order to get Vince a meeting with James Cameron. Turtle attempts to break out of his slump with the ladies and Vince finds out why his neighbor is so friendly.
Ari lands Vince a role in a lucrative foreign commercial to help pay the bills and Eric has a hard time convincing Walsh to release an advance print of Queens Blvd.
The crew travels to Sundance to see the final cut of Queens Blvd. and to convince James Cameron to cast Vince in Aquaman.
Vince is leery of having Mandy Moore play Aquagirl to his Aquaman and Drama lands in jail after a bout of road rage.
Vince heads to a comic convention to launch Aquaman and Ari gives Drama tickets to a U2 concert for his birthday.
Vince complicates things by admitting his true feelings to Mandy. Ari's partner resurfaces and tries to lure Vince away.
When Vince and Mandy are outed as a couple, Eric must keep the two of them acting professionally when in public and Drama becomes excited about his co-star.
When Vince and Mandy's relationship intensifies, Eric must face off with both Ari and Mandy's handlers.
Vince refuses to believe that Mandy is stepping out on him when the guys see her with her ex and Ari and Terrance's battle of wills comes to a head.
Vince alienates his inner circle in the wake of his break-up with Mandy, forcing them to consider fending for themselves.