Five strangers become an elite team of secret operatives when time travelers take over their conscious minds, to try to correct the terrible problems that face humanity in their own time.

A team member buckles under the guilt of not being allowed to prevent future deaths and puts the travelers in jeopardy.

The team struggles to live 21st century lives as they’re faced with the prospect that their missions might be over for good.

Philip makes an unexpected connection, Marcy helps David cope with his trauma, and MacLaren discovers a shocking truth that Kathryn has been hiding from him.

When the team meets Simon, a homeless man with a startling history, they’re led down a path that leads directly to the very first traveler.