Calvin looks out the window to see snow. He thinks it will be perfect sledding weather. The doorbell rings. It's the aliens Calvin sold the planet to for fifty alien tree leaves. They asks what's wrong with the planet he sold.

The aliens complain the cold white glop covers them and freezes their innards. Calvin says it's snow. They get it every winter. The aliens complain Calvin didn't tell them about that. He replies that they didn't ask. They say they were overcharged. Calvin tells them "let the buyer beware". The aliens walk off complaining that he's a dishonorable potentate. They demand he bring the planet up to code.

Mom asks who's at the door. Calvin tells her it's the Girl Scouts. He whisks the aliens outside. He tells them he'll see what he can do about fixing the climate. Mom asks where the Girl Scouts went. Calvin says they had to earn a merit badge.

Calvin tells Hobbes the aliens claim he sold a defective planet. Hobbes suggests offering a refund. Calvin threw away the leaf collection when it got a bad grade. Hobbes thinks they should help them stay warm. Calvin says they don't have arms. They'd need huge socks. Hobbes starts to take down their Christmas stockings from the fireplace. Calvin thinks that's a bad idea.

Hobbes puts the Christmas stockings on the aliens. They thank the earth leader and leave. Calvin complains Santa can't fill them with loot. Hobbes is sure that Santa knows they did a good thing, and things will work out. Calvin realizes he did do something good. He's thinking jackpot now. Hobbes says Calvin's selflessness is the hope of the season.