Dr. Jack Hammond has best chances to become medical superintendent in the clinic. So he's completely absorbed in his work and has no understanding for his teenage son Chris' problems with school. By accident one of them drinks a brain-exchanging serum, and it switches their identities. This leads of course to extraordinary complications in school and at work, but also to insight in the problems and feelings of each other.
Dudley Moore
as Dr. Jack Hammond / Chris Hammond
Kirk Cameron
as Chris Hammond / Dr. Jack Hammond
Margaret Colin
as Ginnie Armbruster
Catherine Hicks
as Dr. Amy Larkin
Patrick O'Neal
as Dr. Larry Armbruster
Sean Astin
as Clarence / Trigger
Camille Cooper
as Lori Beaumont
Micah Grant
as Rick Anderson, Lori's Boyfriend
Bill Morrison
as Trigger's Uncle Earl
Skeeter Vaughan
as Medicine Man
Larry Sellers
as Navajo Helper
Tami David
as Navajo Girl
