The Herlihys are a working class family from Chicago whose three children take wildly divergent paths: Brian joins the Marines right out of High School and goes to Vietnam, Michael becomes involved in the civil rights movement and after campaigning for Bobby Kennedy and Eugene McCarthy becomes involved in radical politics, and Katie gets pregnant, moves to San Francisco and joins a hippie commune. Meanwhile, the Taylors are an African-American family living in the deep South. When Willie Taylor, a minister and civil rights organizer, is shot to death, his son Emmet moves to the city and eventually joins the Black Panthers, serving as a bodyguard for Fred Hampton.

A passenger train has been hijacked by an electronics expert and turned into an untraceable command center for a weapons satellite. He has planned to blow up Washington DC and only one man can stop him, former Navy SEAL Casey Ryback.

When Will Stoneman's father dies, he is left alone to take care of his mother and their land. Needing money to maintain it, he decides to join a cross country dogsled race. This race will require days of racing for long hours, through harsh weather and terrain. This young man will need a lot of courage and a strong will to complete this race.

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.