Gru is a super-villain and enjoys spitting up other people and is in possession of a series of gadgets that allow him to perform any kind of malice. So Gru decides to steal the Moon, but he needs a restrictive beam in possession of the superactive Vector. Seeing three orphaned, Margot, Edith and Agnes, who are free to enter Vector's house to sell cookies, declares to have had "a brilliant idea": to adopt those three little girls to take back the narrow ray ...