Roger becomes Steve's legal guardian, but gets a little overzealous in the parenting department when he gets the principal fired. After getting beat up by the other teachers at the school, Steve decides to run away. Meanwhile, Stan and Francine attempt to make waves after discovering that their vacation at the biggest water park in the world fails to get their hearts pumping.

When Stan realizes that he might never fulfill his dream of becoming a Best Man, he convinces his last single friend, Principal Lewis to marry the school’s Superintendent and to choose him as his Best Man. Stan invites Lewis’ old friend from prison to the wedding, only to discover a secret that could prevent the wedding from happening at all. Meanwhile, Roger finds the perfect pair of shorts, and an encounter with Ricky Martin makes him question his self-confidence.

Steve and Principal Lewis get caught in a dangerous situation at the school. The rest of the family makes an adorable new friend.