16 Episodes · Premiered October 3, 2016 · Ended February 20, 2017
When an experimental time machine is stolen, a history professor, a soldier and an engineer are tasked with capturing the culprit. They soon learn that the thief plans to rewrite American history, and that each of them has a connection to his plan as well as the mysterious organization that funded the machine's development.
When a scientist and CEO creates a time machine, terrorist Garcia Flynn soon steals it and travels back into the past to alter history to his liking. Homeland Security learns of the theft and recruits a team to travel back after Garcia and stop him. First stop: 1937 and the Hindenburg disaster.
Flynn's next target is the assassination of Lincoln, and the terrorist plans to make sure that not only Lincoln but the Union's other top officials die. Lucy, Wyatt, and Rufus try to stop him but wonder if history might be better served if they save Lincoln as well. Meanwhile, Lucy tries to deal with the repercussions of her life in the new timeline.
The team heads to Las Vegas 1962 to stop Flynn's current mission... once they figure out what it is. Meanwhile, Rufus meets with his old mentor and makes a surprising discovery, and Lucy copes with her fiance in the new timeline.
The team heads back to 1944 to stop Flynn from giving his recently-acquired nuclear bomb to the Nazis. However, they soon wonder if he's up to something much more complicated. Meanwhile, Rufus considers his loyalties, and Wyatt gives Lucy advice on dealing with her anxieties in the field.
Flynn's newest attempt to alter history revolves around Santa Anna's attack on the Alamo in 1836. To stop it, the team must help the defenders last long enough to get the civilians to safety. Meanwhile, Wyatt is informed that the current mission will be his last as he is being reassigned.
The team track Flynn to 1972 and discover that he's trying to obtain the missing Nixon tape... where Nixon refers to Rittenhouse. Meanwhile, Flynn reveals that Lucy has been keeping secrets from the teamm, and Rufus is forced to admit that he's been spying for Rittenhouse.
Flynn lures the team to 1754 Pennsylvania to strand them in the past. After Rufus leaves a buried message to tell the team in present what to do next, he and the others go to nearby French fort to get what they need to repair their ship.
The trio heads to 1963 to stop Flynn from stopping Apollo 11's successful mission. However, Flynn seems more interested in a mysterious side mission. Meanwhile, Rufus confronts his mentor Anthony.
Following a photo from the warehouse raid, the team travels back to 1934 to discover why Flynn is interested in a particular bank and a necklace key. Wyatt and Lucy end up teaming with Bonnie and Clyde, who are robbing the bank... and Bonnie has the key on her neck. Meanwhile, Denise begins an investigation into Connor.
The team trace Flynn to 1780 and discover that he plans to use Benedict Arnold to get to Rittenhouse... and kill him. Now the trio must decide whether they will help Flynn or hinder him.
Rufus and Wyatt track Flynn and his captive Lucy to the 1893 Chicago World Fair. However, Flynn, anticipating their arrivals, sends them to the World's Fair Hotel: the "Murder Hotel" of serial killer H.H. Holmes.
Flynn travels to 1882 to save Jesse James and hire him to lead him to a remote cabin. The team follows him to 1882 and team up with Marshal Bass Reeves and his friend Grant to track Flynn and Jesse down. Meanwhile, Connor begins training Jiya so that she can replace Rufus.
Wyatt convinces Rufus to help him go back in 1983 and keep the parents of his wife's killer meeting and having a child. Meanwhile, Anthony contacts Lucy with a plan to stop Rittenhouse and Flynn.
After Wyatt is taken into custody, Rufus and Lucy follow Flynn to 1927 to stop him from interfering with Charles Lindbergh. Meanwhile, the NSA takes over the project and assign a new soldier to the team.
When the NSA sends Rufus and Lucy back to 1962 to kill Flynn's mother, they hijack the Lifeboat and meet up with Wyatt and Denise. However, the team learns that Flynn is visiting 1931 and goes back to stop him. Meanwhile, the NSA take Jiya into custody while Mason offers Cahill a deal.
With Jiya's help, the team travels to 1954 to stop Flynn from blowing up the Rittenhouse summit. However, the effort may prove too much for one of them. Meanwhile, Lucy devices a plan to stop Rittenhouse... but will have to join forces with Flynn to succeed.
