Marco, Tato, Serena, and Leo are 9 years outdated, and they're inseparable mates, able to defend one another from their schoolmates’ bullying. On the night of Marco's birthday, all 4 discover themselves collectively to blow out the candles and unknowingly make the identical want: change into adults. In a single evening's time, they discover themselves magically the identical age as their mother and father, however with the identical behaviour and ideas they've as youngsters.
