The Tomorrow Man.

Larry Mackey is a blue-collar dad in the 1970's, determined to make a better future for his young son. A future that's coming a lot faster than he thinks... When a depraved gang of time travelers from 2000 cross Larry's path, he's accidentally forwarded, where he discovers he's the reason his grown son has become a gangland murderer. Now he must make every minute count in his second chance of a lifetime to set things right