
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 TV reporter in 1985 San Francisco, Sam must protect a psychic (Tamlyn Tomita) from a serial killer.

As an elderly gunfighter in 1957, Sam's reputation as a 19th-century hero is threatened by a jealous ex-partner (John Anderson).

Sam takes the existence of a sibling-tormented 13-year-old whose mother (Sandy Faison) contemplates divorce.

Sam becomes an unwed, pregnant 16-year-old who must convince the baby's father to help her support it.