Sidney and his partner Watson use an experimental time machine to catch the fugitive who broke time. Now they meet time-traveling agents from different future timelines. The agents are working against each other and want Sidney and Watson's help, or they both could be killed. With no knowledge of how it all works, Sidney is told that his decisions determine what becomes history. Staying alive long enough to decide is also a consideration.
A mysterious woman from a future timeline saves Sidney during an attack. He learns a disturbing truth; he could be the reason for multiple time paradoxes. Needing help, he takes a risk on this unknown woman. The decision impacts everything. There are two possibilities: they will fix time or cause the universe to explode.