His cousin Egremont, a dedicated souse and black sheep, has escaped to Hollywood and is enthusiastically getting ready to damage the family name still further. Hot on his tail, Reggie about to talk sense into him, but an agonizing toothache drives Reggie to the dentist instead. Something very strange happens when he finds himself face to swollen face with child star Joey Cooley. Under the influence of laughing gas, a cosmic transfer takes place, leaving Reggie's mind in Joey's body and vice versa. And the world looks very different through Joey's eyes.