
When a group with nefarious intentions attempts to change the world as we know it by altering the past, Lucy, a historian, Wyatt, a soldier, and Rufus, a scientist, unite to form an unlikely partnership, traveling through time to save history. Their riveting adventures take them to some of the most thrilling, volatile and critical events on record, including a venture to the Old West, a sojourn to the Alamo, a visit to the famous Chicago World's Fair and a crusade into Nazi Germany. Along the way, they cross paths with famous historical icons, such as Josephine Baker, Harry Houdini, Ernest Hemingway and infamous rivals Eliot Ness and Al Capone. But every step the team takes to protect history puts everything we know at risk -- because changing one thing changes everything.

Wyatt and Rufus are forced to bring a 17-year-old John F. Kennedy with them to the present; Kennedy escapes into modern-day San Francisco; the team must rescue him and return him to the past before Rittenhouse assassinates him in 2018.

Connor Mason joins the team as it travels back to the Depression-era South to rescue the legendary Robert Johnson; Christopher keeps Wyatt in the present to execute a dangerous raid on Rittenhouse headquarters.

Lucy, Wyatt and Rufus find themselves in Germany in the midst of World War II, where they must race to stop Flynn and end his psychotic crusade; the team meets one of literature's most popular figures.