In a rusted unnamed city full of five-dollar hotels and flea markets, a young homeless girl named Eggs is trying to make her way in the world. She's shy and bold at the same time, and wary of strangers, but she is convinced beyond all reason that she can fly.
And fly she does, from rooftop to rooftop, from chimneys to phone wires; she scurries up the sides of buildings, and sneaks into secret lairs. Eggs is a loner but she makes two friends: Grack, who sells 100 different kinds of hot dogs from his bicycle cart, and Splendid Wren, a punk rocker whose open window Eggs came crashing through one night. Both Grack and Splendid Wren try their best to protect her, but Eggs meets her match when on a cold night she swoops onto a rooftop and steals a warm jacket belonging to Robin, a neighbourhood baddie with anger management issues. Can Eggs elude his wrathful revenge?