To run from their enemy, the plane-destroying Gorg, the Boov relocate on Earth, where they consider a new Home, beside the humanity. Oh, who is an excitable and freethinking Boov but isn't liked by his own people, wants to hold a housewarming party, but the "send all" button of his invitation accidentally reveals their location to Gorg, which makes others of the Boov get more aggravated with him and try to hunt down him. When fleein, Oh makes friend with Tip, a human girl and helps her to find her mother.