The O'Brien family are new in town. An ordinary family - well, almost. Roy O' Brien is a little different - he's a cartoon! Roy's boredom on a Sunday afternoon sees him trying desperately to distract Becky from her homework. He inadvertently causes a commotion in the kitchen, which prompts a frustrated Maura to yell, 'Get out!'. Roy takes this literally and thinks that he has been banished from the house for good. When his friends Tommy and Jack learn of his new runaway status, the adventure begins.