This lovable ABC television hit with an improbable plot follows the adventures of unlikely superhero Ralph Hinkley (William Katt), who has to split his time as a high school teacher with his duty to save the world. With the help of an FBI agent (Robert Culp) and the support of his girlfriend, Pam (Connie Sellecca), Ralph continues trying to tap into the powers of his alien-crafted supersuit, which used to have a manual -- until he lost it.