In this comedy, Kreton is an alien fascinated by the humans who populate Earth. He keeps visiting despite orders from his teacher to stay away. Finally, he's given permission to stay for an extended visit in order to study human beings. He's invited to stay with a family living in the suburbs, but they are sworn to secrecy regarding his true identity as an alien from outer space. His visit is complicated when Kreton breaks another rule and becomes romantically involved with the family's daughter. His teacher then gives him the ultimate lesson by allowing him to experience being human.