When six elementary school students suspect their missing teacher is Befana, a Christmas witch who delivers presents to good children, they set off on a magical journey to save her.

Claudio is 50 years old and tired of his job as an real estate agent. He is also separated from his wife who left him for the "King of Zumba".

What happens when two very different former elementary school classmates meet again as adults and decide to swap genetic codes to improve their lives? Between clumsy scientific experiments and DNA hacking with disastrous effects, the two will prove to be decidedly unsuited to these new lives...