Kevin McCallister’s parents have split up. Now living with his mom, he decides to spend Christmas with his dad at the mansion of his father’s rich girlfriend, Natalie. Meanwhile robber Marv Merchants, one of the villains from the first two movies, partners up with a new criminal named Vera to hit Natalie’s mansion.
Jack, a soon-to-be graduate, finds he’s having a difficult time letting go of the college life — and decides maybe he doesn’t have to. Also questioning whether there’s life after college are Jack’s roommates: Rob, who fears domestication; comic-strip artist Mickey, who’s shy around girls; intellectual party animal Slosh; and perpetual student Dennis.
