A specialised team is given the job of chasing down a fugitive in possession of a state-of-the-art time machine. They follow him to the 1937 Hindenburg disaster, where they must put a stop to his diabolical plans to change the past.

Lucy, Wyatt and Rufus follow Garcia Flynn's trail to the night of Lincoln's assassination, where he has teamed up with John Wilkes Booth, leaving the team questioning if they should change history.

Flynn and the team find themselves on the run alongside an infamous mistress in 1962 Las Vegas. Rufus runs into an old mentor and begins to question his motives.

Lucy, Wyatt and Rufus race to put an end to Flynn's psychotic crusade when they find themselves in World War II Germany.

Flynn returns to a crucial moment in the war over Texas, and the team are stranded inside the Alamo, with no hope of rescue.

The team head back the Nixon-era Washington DC, where Rufus and Lucy kick off an investigation that shakes them to the core.