Billie and Zack, in considering his proposal, want to see if their relationship can work outside their apartment. Abby plans their co-ed babyshower. They hang out with Nick and Abby, but offend Abby when sharing Zack's perceptions of Nick, so she cancels the shower. They hang with Davis and his new girlfriend but that goes badly too when Billie exposes that he is not Dave Grohl from the Foo Fighters. Abby feels badly, makes up with Billie by throwing the babyshower with many friends there.