Season 13

Stan sets out to stop a tree that he considers his father from being cut down. Steve realizes he's stopped growing and considers surgery.

Steve joins the high school water polo team to get girls. Meanwhile, Roger and Stan get a boat.

Hayley mentally regresses to a 6-year-old. Steve and his pals get a slow cooker.

Steve goes to work with Stan and discovers the N.S.A.. Hayley decides to let go of being a vegetarian and eat meat for one day.

Stan goes undercover as a surfer a la Point Break. Steve befriends a drifter, Hayley might be pregnant, and Roger wants the World Cup to be held in the backyard.

Stan gets Francine baseball tickets for her birthday but is upset when they have a horrible kiss on the kiss cam. Steve and Roger head to Nevada to help clean polluted water.

When Stan is given the task of putting together the CIA calendar, Hayley attempts to destroy it. Meanwhile, Roger gets a Discover card and fakes his death to get out of paying the enormous balance.

Roger becomes a teacher at Steve's school and gets involved with a class of underprivileged kids. Meanwhile, Stan and Francine visit a retirement home and Stan decides to stay.

Francine sets out to help news anchor Greg when he and Terry split up. Roger becomes obsessed with a fictional boy from an old game called Dream Phone.

Stan, tattooed and haunted, travels a barren Langley Falls alone. Meanwhile, a mysterious element known as "The Two Hundred" has reigned terror on the town and separated Stan from his family.