Tayo is disappointed he and his friends cannot stay out late at night and sleep in, he is envious of the grown-up buses
who are allowed to stay up late and sleep in. Tayo meets a Grandma car who turns out to be a wizard and grants Tayo a wish to be all grown up. Tayo is excited he can stay up late and play and sleep in. That is until he realizes the heavy responsibility that is placed on him of being a grown up.