
Former scientist Sam Beckett finds himself trapped in time due to an experiment gone awry, leaping into the body of a different person each week. Al Calavicci, at first known only as The Observer, is Sam's holographic adviser -- he provides Sam with some details about his new identity and gives him guidance on how to help the people affected by his presence. But with little memory to help guide him, our hero is forced to bluff his way through many a wacky situation.

As a member of a motorcycle gang in 1958, Sam tries to prevent the death of a girl (Josie Bissett) obsessed with life on the road.

Sam becomes valet to a ruthless developer (Charles Rocket) who plans to demolish a shelter for the homeless.

As an aspiring actor in 1969, Sam must save his career and promote the talents of an older lover (Penny Fuller).

As a naval academy cadet in 1964, Sam is endangered by his support for an ex-roommate who was expelled for homosexuality.