Pablo, Marcelo, Nacho y Julito travel to the beach on a coach bus. Their thirteen-year-old cousin, Magalí, has offered to travel along with them as their babysitter. "Well, boys, now its time to go to sleep!" she tells them at the beginning of their journey. Little did she realize, sleep is the last thing the boys had planned. Soon "Mr. Pantallas (Lampshades)" comes walking angrily down the aisle.... but this is only the beginning of the boys' adventures; they also meet a pink animal with a big head, huge eyes, and eight poisonous feet.