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.

Cory may be possibly expelled from college, when he knocks a teacher out the screen-window of the commons room. However, that same teacher hit on Topanga in her dorm last night, and he's lying about it.

While everyone anxiously awaits news about newly born Joshua Matthews, Cory's continued self-absorption alienates Topanga, who now considers herself a member of the Matthews family. Even Eric's little friend Tommy views Joshua as his new "brother." It's only when Shawn returns and is accepted by the elder Matthews as "family" does Cory realize where his true values lie.

When Topanga proposes for him to marry her at graduation, Cory is absolutely stunned. However, when everyone else has conflicting views on the subject, Cory and Topanga quietly slip away to elope.

When Topanga finds that she can't say "I do" at the altar, things get worse as Amy gets angry and Eric tries to stop Mr. Feeny's retirement party.

Now that Cory and Topanga both know that Shawn and Angela still love each other, they have conflicting views on what to do about it -- especially when, unbeknownst to each other, Cory invites Shawn to join their family Christmas while Topanga invites Angela. Topanga wants to let well enough alone, but Cory misses no opportunity to throw his friends together, but the consequences are not exactly what he wants: after they finally kiss, Angela expresses her love for Shawn, but he protests that he is "not ready" to make the same commitment and she storms off for good. Meanwhile, Eric takes his store Santa job a little too seriously when he convinces Rachel and Jack to help him steal his family's gifts in order to make underprivileged children happy.

When Cory and Topanga make an agreement to tell the truth about everything and everyone, their totally honest pact creates tension at Rachel and Jack's first dinner party. When the party guests play a game that forces them to also tell the truth, personal feelings are revealed that they would rather keep to themselves.

When Cory has nightmares where the recurring theme finds him trying to kill Shawn in imaginative ways, he goes to Feeny for an interpretation. Meanwhile, Eric finds a new, but odd, roommate -- one who seems to have seen Hitchcock's "Psycho" once too often.

After a director has Shawn and Topanga kiss while making a promotional film, Cory-certain the duo are harboring romantic feelings for one another-directs them to go on a date and explore their emotions. Meanwhile, Eric and Jack pretend to be mannerly in front of Rachel.

On the first day of college, an ambitious Cory fills his schedule with tough courses but quickly cracks under the pressure and flees to Mr. Feeny's side in Wyoming. Meanwhile, Eric tries to be more sensitive so Rachel will be attracted to him.

Although Angela's upset after she and Shawn call it quits, she shuns Cory's offer of support, claiming they were never friends.

When Cory degrades a student's poem that Mr. Feeny reads in class, he is dismayed when he finds out that Shawn wrote it.

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 are searching for something more, just like Shawn -- and Cory discovers that Shawn has no intention of returning home.

Topanga is in wedding plan mode, and persuades (strongarms) Cory into accompanying her, Shawn and Angela to a posh ceremony in the hall of her dreams -- where an unhappy father of the bride offers Cory a million dollars to marry his daughter. Meanwhile, Tommy pleads with a heartbroken Eric to adopt him so he won't have to move to California, and Eric pretends to no longer want Tommy so he can be happy with his new family.

Shawn and Angela draw up a restraining order forbidding Cory and Topanga from any further interference in their romantic lives, but Shawn still has a difficult time seeing Angela date someone else -- especially when they all wind up in the same restaurant together. Meanwhile, Alan tries to overcome his feeling too old for another baby by shopping for a motorcycle, and Eric becomes an over-enthusiastic birthing coach.

Cory and Topanga play "The Fiancée Game" to prove how compatible they are, and are crushed when Eric and Rachel prove to know far more about each other than they do. Topanga suggests a quick solution: they should live together on campus and really get to know each other. (Cory mistakenly thinks this means sex and buys satin pyjamas and sheets.) Living together shows them sides of each other they're not too crazy about: for example, his big toe clipping flies across the room and lodges in her already-applied facial cream. Meanwhile, Shawn has ignored Jack's repeated call about clearing out Chet's trailer, and, once persuaded, is freshly outraged to discover evidence that Chet went to Jack's stepfather for help in financing Shawn's college education. He decides to take the trailer out on the highway and convinces Cory to accompany him "for the weekend," but oddly insists on saying goodbye to Topanga. Then Jack, who has been struggling to contain his own grief in deference to Shawn's feelings, falls apart and cries helplessly in Rachel's arms; and Eric walks in to find them kissing passionately.

Cory becomes upset when Topanga seems less interested in spending Valentine's Day with him than with consoling Amy about the last stages of her pregnancy, so when Topanga decides to cheer Amy up with a baby shower, Cory takes charge. Unfortunately his concept of a baby shower turns out to be a female version of a bachelor party, complete with a pizza-guy stripper, but the disgusted guests are distracted when Amy's waters break and she is rushed to hospital for a premature delivery -- one which the new Matthews baby may not survive. Meanwhile, Shawn is still on the road to nowhere; Morgan is less than happy about the arrival of a new sibling; and Jack and Rachel worry about the effect of revealing their new relationship to Eric -- who announces he already knows, and is moving out.

While Cory deals with his anxieties about his impending marriage, Topanga's parents come for a visit and reveal some unexpected news: they are on the brink of separating. Meanwhile, Feeny pops the question to Dean Bolander, and they agree to get married in the Matthews living-room; and a self-pitying Eric asks Shawn for advice on how to cope with losing Rachel to Jack.

After Cory is introduced to art prodigy Alexandra Nechita, he develops an inferiority complex and blames his lack of skills on his "average" father. Meanwhile, Alexandra, lonely touring without anyone her own age, befriends Morgan.

The series returns to form as Cory and Shawn unite for the last time as a "bad boy" team to help Mr. Feeny, whose hesitation in declaring his feelings for Dean Bolander looks like a fatal mistake when her ex-husband Curits returns from an expedition bent on winning her back. Shawn and Cory trash the interloper's lab and blame in on a jealous rage by Feeny -- who then saves Dean Bolander's life for real by swatting the rare bee brought back by Curits just before it stings his highly allergic love. She explains that she was not taken in for a moment by the boys' ruse -- just impressed that Feeny's students care about him so much. Meanwhile, Rachel challenges Jack to take her out on a real date.

Cory loses his engagement ring when he goes to a bikini club with scantily-clad waitresses to prove that he still fits in with the rest of the guys, despite being engaged.

In an effort to become more popular, Eric creates a TV show similar to The Truman Show featuring his roommates, but it's Rachel who becomes the campus darling. Meanwhile, Cory and Shawn expect special treatment from Mr. Feeny.