At the beginning of the story, we see Frosty's hat escape from a locked chest in an attic, fly out a window, and descend on the picture perfect town of Evergreen. Frosty first reveals himself to Tommy Tinkerton, the son of the town's impossibly upbeat but no-nonsense mayor, Mr. Tinkerton. But Tommy does not dare accept Frosty's invitation to play outside in the snow, because he’s afraid of disappointing his father. So Frosty instead befriends Tommy's best friend, Walter Wader, who shocks everyone, especially his very strict mother, by breaking curfew and flying, sledding, and snowball-fighting with Frosty.