In Year 222, Daniel, a student at Lunar School XXIII accidentally travels to Ancient Egypt (1250 BC) using a school time capsule. His goal was to try the "mother of all pizzas", but he ends up imprisoned after accidentally breaking some beer amphorae.
Meanwhile, his friends Hector and Bibi discover his disappeareance when an Egyptian cat, Polvorilla, appears at school inside the capsule. Disguised as Egyptians, they travel to the past to rescue him, landing in a temple where the locals mistake them for the gods Osiris and Isis. Will they return to the future without altering the past?