When Shawn's mother runs away - with his and his father's trailer home, Shawn must stay at Cory's while his father hunts her down. This happens on career day, on which Cory is feeling embarrassed because he feels his Dad's job is too boring.

Shawn's dad leaves in search of his runaway wife, and Shawn moves in with Cory's family temporarily. Meanwhile, Eric is having trouble studying for his SATs.

Shawn's mom is back but won't go home until she is sure they can be a good family--something Shawn and his dad must accomplish on their own.

Shawn's life is a mess when his dad takes a job as a school janitor, so Mr. Feeny offers to let him decide his father's career fate.

Cory and Shawn feel their families should spend Thanksgiving together, but everyone else thinks it's a foul idea.

When Eric moves back home, Cory vows to get him a place to stay. But the roommate he finds turns out to be Shawn's half-brother.

Roommates Eric, Shawn and Jack are the focus of Cory's film, and it's not long before the plot thickens: Shawn and Jack can't get along.

Shawn and Jack's ne'er-do-well father Chet reappears on campus suddenly and, confronted by an angry Shawn, promises that he has come to stay and make amends to his sons for never being there for them. But after treating them to a steak dinner and consuming a piece of Rachel's "killer" chocolate cake, Chet suffers a heart attack. Shawn reveals that his anger at his father is partly fear that his own apparent inability to connect emotionally is inherited, and it appears a reconciliation might taken place -- then Chet has a second attack and dies. This is a powerful and quite touching episode, with a particularly affecting performance from Rider Strong, marred only by the obligatory presence of the entire cast in the emergency ward.

To take his mind off his dad's death, Shawn takes Cory along on a soul-searching road trip in Chet's trailer, where they end up at a truck stop where the young waitresses (portrayed by band Nobody's Angel) are searching for something more, just like Shawn -- and Cory discovers that Shawn has no intention of returning home. Shawn must persuade Cory to let him go, just as the girls' father/boss must let them find their own way. Meanwhile, Eric tries to understand the kiss he witnessed between Jack and Rachel -- as do they; and Shawn discovers that his father, a truck stop regular, was secretly very proud of him. In a surprise code, Chet's ghost appears to Shawn as father and son finally reconcile their differences and Shawn drives off into his uncertain future.

Shawn struggles to accept the fact that he has no idea who his parents are. Meanwhile, Eric puts together a surprise party for his dad, who has an even bigger surprise for the despondent Shawn.

In a clip-filled series finale, Cory and the gang bid Mr. Feeny farewell as he and Topanga head to New York. Meanwhile, Jack, Eric and Shawn make big moves of their own.

In a clip-filled series finale, Cory and the gang bid Mr. Feeny farewell as he and Topanga head to New York. Meanwhile, Jack, Eric and Shawn make big moves of their own.