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 has been a good boy lately, running errands for his mother, doing household chores and even helping his elderly neighbour. He has been so good in fact, that he wakes to find a halo hovering above his head. This comes as quite a shock and proves more than a little embarrassing. With the help of his friends, he sets about counteracting all of his recent good deeds with bad ones in the hope of making the halo disappear, but what happens if he goes too far?