Jess invites her divorced Mom and Dad over for Thanksgiving dinner and enlists Nick and Cece to help her with a "Parent Trap" to reunite them. Meanwhile, Schmidt's cousin, Big Schmidt, visits, and Winston manipulates them into an escalating battle to prove their manhood.

When Cece and Schmidt ask Jess and Nick to be their Maid of Honor and Best Man, respectively, their first task is to plan the engagement party. But when Jess invites Cece's mom to join in the celebration, Cece is forced to make a surprising announcement to Schmidt.

Efter att ha blivit emaskulerad framför Cece insisterar Schmidt på en manlig svensexa-helg i Vegas, men roadtripen går snett när killarna hamnar på en öken-bikerbar och han måste sätta sin nyfunna bravader på prov.