Young Billy Webb likes to swap things with his schoolmates. He meets Alfonso Bonzo, an 'Italian exchange student' who also has a talent for swapping things (thus his self-description: he is an Italian student who exchanges things). Billy makes a series of magical but increasingly risky swaps with Alfonso, leading to unexpected and sometimes sinister consequences as Alfonso's true nature becomes questionable.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.