Time Under Fire (1997)

Description

An American submarine accidentally discovers a passage to another time zone. Without warning, the crew suddenly travels across the time threshold, into the future. This incident prompts an immediate investigation. An expedition is dispatched, led by Commander Alan Deakins, to travel to the future via the same route. Once there, Alan finds himself in an iron-fisted police state. The submarine crew is captured, and when Commander Deakins seeks help from a group of freedom fighters, he makes a shocking discovery: the leader of the group is none other than his grandson, John Deakins. In a brutal battle, they engage their oppressors.