After an epic battle at reunion last season, Reza decides to mend fences with MJ in the best way he can. Faced with turning 40, Reza also looks to treat himself to a Porsche. Mike and his girlfriend Jessica get serious when she agrees to start the process of converting to Judaism. GG and her sister Leila find a new friendship in the midst of Leila's surprise divorce. Working to move forward, GG finally apologizes to her old nemesis Asa. Lilly throws herself a gala bash for her "Dirty 30" birthday, but MJ ends up left off final guest list leaving Reza and the rest of the group caught in the middle.

MJ is back in the group's good graces, but after spilling one of GG's secrets to her boyfriend Sean, she finds herself in yet another rift. GG asks for an apology from MJ, but MJ refuses leaving GG to retaliate by trying to get Leila to fire her. Lilly is still reeling from MJ's assertion that no one in the group is her friend and questions why she even bothers. Mike helps his family pull together an epic Persian party to celebrate his brothers' graduation from dental school, but tempers boil over at the party when Leila has to pull an angry GG and MJ apart.