When Mayor West marries Lois’ sister, Carol, they move into the Griffin’s house to be one big “happy” family. To make room for everyone, Stewie is bumped out of his room and takes over Chris’ room, but not everyone is annoyed by the change. Peter and Mayor West bond and become best friends.

Lois cooks a big Thanksgiving meal and invites the whole crew over for dinner, and Joe is shocked when his formerly M.I.A. son, Kevin Swanson, returns from Iraq.