Katie has big plans with her boyfriend, putting Joyce in a difficult position. Meanwhile, Mel tries to have a first date with Allison and sets out to prepare dinner for her, but he doesn't know how to cook; Henry realizes he can get away with anything with both parents distracted.

Joyce's sister unexpectedly arrives, impacting the Fisher family and frustrating Mel. Meanwhile, Runyen convinces Henry that he's spending too much time with Jenny.