- Kevin heads to the kitchen and turns on the TV. He starts to wonder where everyone is, looking concerned.
- Back on the plane, Kevin's Mom chats with his Dad.
- Kevin wanders around the house, calling out to his different family members. He even heads down to the basement, where the creepy furnace freaks him out.
- He runs outside and sees the cars are in the garage, and thinks his family didn't go to the airport (he doesn't realize they took a van).
- Back inside, he thinks he made his family disappear—and he feels pleased.
- Kevin celebrates: he hops on his parents' bed, eats junk food, and zooms around the house.
- He breaks into his brother Buzz's secret stash, taking out firecrackers and chucking a copy of Playboy over his head (Kevin's not interested...yet.) Then, he uses his brother's BB Gun to shoot action figures down a laundry chute.
- Soon Kevin will be exchanging those action figures for human targets—but in a justified way.
- Next, he watches the movie his uncle wouldn't let him watch—Angels With Filthy Souls. But its violent death scene, in which one gangster shoots another, scares him. He covers his eyes.
- On the plane, it's nighttime: Kevin's mother tells his father that she has a feeling they forgot something. His dad says he forgot to close the garage…but Kevin's mother says that's not it. Suddenly, she realizes, shouting, "Kevin!"
- Back at the McCallister house, Kevin rides a toboggan down the stairs and directly out the door.
- Cutting back to the plane, Kevin's mother consults with the airplane staff about trying to call home. She feels guilty.
- It's just like losing your car keys in the couch cushion—except your car keys are your kid.