A loveable but cowardly alien race, the Boov, is escaping yet again from baddies (the Gorg) who keep trying to destroy them. They arrive on Earth, effortlessly transfer mankind to Australia, inhabit the now empty cities, and commence to hiding. Only, the aliens missed one little girl, Tip (a nickname; her real name is Gratuity… Gratuity?) Tucci, who was left behind along with her cat. Together with a loveable misfit alien and main character named Oh (voiced by Jim Parsons), fellow outcast Tip (Rihanna) goes on a rollicking road trip in search of Tip’s mom (Jennifer Lopez), become best buds and learn life lessons along the way that lead (spoiler alert, well, kinda) to the inevitable happy ending.