Ed becomes concerned about his legacy after taking a longevity test and learning that his life expectancy is ""only"" 83 years; Stella returns to Stuckeyville after breaking up with her boyfriend, who follows her there; hoping to cash in on the royalty market, Phil and Eli compete to create a new birthday song; Frankie and Leon come to a parting of the ways; Warren's high-flying approach to playing Cupid for Stella on Valentine's Day gets him the thank-you of his dreams.

Eli, Phil and Shirley take over preparations for Stuckeybowl's 75th birthday party; Carol completely freaks out when Ed tells her that Molly stole her journal and read parts of it to him, but she can't resist asking Molly about his reaction; bored with their friends' dinner parties, Mike and Nancy accept an invitation to a kegger from Stacie and Jenny, coeds they find stranded by the side of the road with a flat tire; over his better judgment, Eli takes Phil's advice to invite Vivian to the party, and gets turned down; while one college party and its hangover are enough for Nancy, Mike decides to take the plunge again by attending ""Luau Night"" after helping Stacie and Jenny study for their chemistry exam, but gets more than he bargained for when he's forced to turn down Stacie's proposition; Shirley comes up with the right person and the right motivation, and Eli finally gets up the courage to approach a pretty woman at the party; Warren's band gets booked to play at the festivities an

The first weeks of the new relationship between Ed and Carol are seen through the lens of his cousin Benny, who's filming a documentary for his final film school project; when Carol's lease is up, she and Ed decide to move in together; while mugging for the camera, their friends comment on Ed and Carol, and the nature of romantic relationships in general; as time goes on, and familiarity begins to breed indifference and conflict, Ed learns an important lesson about relationships from his high school driver's ed teacher and Carol gets a crucial insight into Ed from Mike; Molly teaches Warren a lesson about punking one-upmanship.

Eli takes pity on Phil's latest get-rich-quick scheme; Warren, Mark and Jimmy create a hilarious Ed and Carol tribute video for the rehearsal dinner, but Shirley is the one who really brings down the house with a special song; Mike feels a little lost as the best man in the face of the extensive groomsman experience and contacts displayed by Ed's cousin Mitch; Molly opens the door when a possible opportunity comes knocking; Ed gets a behind-the-scenes inspiration for a wedding day $10 bet from a surprising source; Ed and Carol hatch some truly hairbrained ideas in their quest for the appropriate theme for their wedding until Ed's inspiration leads them to the perfect place to start the next phase of their lives.