While Rufus and Wyatt are stuck inside a secret facility with a broken Lifeboat, Lucy joins her mother on a Rittenhouse mission to a World War I battle front -- in order to save the life of a wounded American soldier.

With a tip from an old enemy Lucy, Rufus, and Wyatt head to 1950s South Carolina, where a famous stock car driver is being targeted by Rittenhouse operatives. When they encounter a sleeper agent the team seeks help from Wendell Scott, the first African-American NASCAR driver.

The time team gets a lead on a Rittenhouse sleeper agent inside a 1941 Hollywood studio, where they must team up with Hedy Lamarr after the only copy of Citizen Kane goes missing. Meanwhile Jiya is examined by a doctor after another seizure, and Garcia Flynn angles for a way out of prison.

With Wyatt sidelined by a life-altering development Lucy and Rufus reluctantly take Flynn on a mission to Salem, Massachusetts in 1692, where Rittenhouse is meddling with the infamous witch trials. Meanwhile, Wyatt goes to great lengths to reconcile with Jessica.

Lucy, Wyatt, and Jessica are on a manhunt when the team brings a young J.F.K. to 2018 to rescue him from Rittenhouse assassins -- only to have him escape from the bunker and into the San Francisco night. Lucy's mother arranges a meeting with Agent Christopher.

Connor Mason joins team on a trip to the San Antonio in 1936, where the legendary blues musician Robert Johnson is about to record the album that will change the world. In the present day Wyatt is tasked with a covert solo mission to gain intel on Rittenhouse's home base.

Suffragette Alice Paul is framed for murder in 1919 New York, and the team turns to a brilliant female detective to help ensure the passage of the 19th Amendment. Jiya's warning causes strife with Wyatt, and Rufus and Flynn must decide whether they can trust an enemy.

A seemingly straight-forward mission to stop the assassination of President Reagan puts the team into the path of a young Agent Denise Christopher, who they must convince not to change her path that leads to the team's creation.

A jump to South Carolina during the Civil War prompts the team to join up with Harriet Tubman, who is leading a slave revolt that will prove vital to the Union cause. As Wyatt struggles over his friends' suspicions about Jessica, Jiya demands that Mason take her to meet a former time ship pilot who also experiences visions.

The team is fractured after one of their own is captured by Rittenhouse. But after Jiya escapes from the enemy she finds herself stranded in Chinatown, San Francisco in the 1880s -- leading to a bloody clash between the team and Rittenhouse.