Theorizing that one could time travel within his own lifetime, Dr. Sam Beckett stepped into the Quantum Leap accelerator and vanished... He woke to find himself trapped in the past, facing mirror images that were not his own and driven by an unknown force to change history for the better. His only guide on this journey is Al, an observer from his own time, who appears in the form of a hologram that only Sam can see and hear. And so Dr. Beckett finds himself leaping from life to life, striving to put right what once went wrong and hoping each time that his next leap will be the leap home.

A group of friends graduates from the halls of Georgetown University into lives that revolve around sex and career aspirations. Kirby waits tables to pay for law school. His roommate Kevin struggles at a D.C. newspaper as he searches for the meaning of love. Jules may be an object of adoration and envy, but secretly she has problems of her own. Demure Wendy is in love with Billy—a loveable sax player and an irresponsible drunk. Alec wants it all: a career in politics and the appearance of a traditional home life. Alec’s girlfriend, Leslie, is an ambitious architect who doesn't know about his infidelity, but his new allegiance to the Republican Party is already enough to put her off marriage.