Eddie becomes distraught when Wendi breaks up with him over disagreements on how they want to handle their future. Meanwhile, Mike struggles to address Eddie's heartbreak, and Peggy contemplates whether she has to break up with Wendi too. To complicate things further, Joey convinces Frank to send Wendi a love letter, pleading his case as to why she should be his girlfriend. With Frank's impending humiliation on the horizon, the Cleary boys try to help him retrieve the letter and just end up getting into more trouble.
In a working-class neighborhood outside Los Angeles, Mike and Peggy raise eight boisterous boys during the 1970s. There are 10 people, three bedrooms, one bathroom and everyone in it for themselves.