A hobo played by Barnard Hughes decides it's time to go home. Drifting from place to place, Hughes finds himself in his hometown of Salt Lake City at Christmas time. Here he hopes to close old wounds and be reunited with his unforgiving son played by Gerald McRaney, and get to know the grandchildren he has never met. McRaney, still resenting the fact that Hughes ran out on his family 25 years earlier, gives his father only one day with his grandkids; after that, he's expected to leave and never come back. All the while Hughes' friends warn him that his son and the past are memories that are best left alone, and should leave, but he has to find out for himself.\
When Nick and Jan move into their new apartment in San Francisco, the batty landlady upstairs tells them about a girl who used to live there in the 20's: a brash young party girl named Maxie, who died in a car crash the morning before her big audition for a Hollywood studio. The trouble is, Maxie, or rather her ghost, hasn't left the house. Worse, she can take over Jan's body. And the only way she's going to leave is if she gets that audition.
When a professional couple who have lived & worked together for many years finally decide to marry, their sudden betrothal causes many unexpectedly funny and awkward difficulties. They soon find that being married is often quite different from being "best friends."
Hungarian physicist Leo Szilard leaves Europe, eventually arriving in the United States. With the help of Einstein, he persuades the government to build an atomic bomb. The project is given to no-nonsense Gen. Leslie Groves who selects physicist J. Robert Oppenheimer to head the Los Alamos Laboratory in New Mexico, where the bomb is built. As World War II draws to a close, Szilard has second thoughts about atomic weapons, and policy makers debate how and when to use the bomb.
As Kevin Flynn searches for proof that he invented a hit video game, he is 'digitalized' by a laser and finds himself inside 'The Grid', where programs suffer under the tyrannical rule of the Master Control Program (MCP). With the help of a security program called 'TRON', Flynn seeks to free The Grid from the MCP.