In Rat Pack-era Vegas, the team is hot on Flynn’s heels with the era’s most infamous mistress in toe.

Lucy's situation grows desperate after she's taken captive by Flynn and brought to the 1893 Chicago World's Fair. In their dogged pursuit of Lucy, Wyatt and Rufus fall into a sinister trap.

When a mission goes awry, Wyatt and Rufus are forced to bring a 17-year-old John F. Kennedy with them to the present. Anxious to return the future president to history, the team must find a way to work together to rescue JFK and return him to the past before Rittenhouse assassinates him in 2018.