Ted’s best friend, Marshall, wants to propose to Lily, Ted must act quickly if he hopes to find true love, but destiny have something else in store
Heads of state gather at the UN to sign the accord, three at CTU make a final effort to expose a conspiracy, Logan and Pillar tie up loose ends, and justice may elude Jack.
When the Legends realize they broke the timeline, Rip Hunter (guest star ARTHUR DARVILL) arrives with his new organization -- the Time Bureau -- to relieve them of duty in the season three premiere. But a new threat arises when Rory spots Julius Caesar (guest star SIMON MERRELLS) in Aruba. Thrilled at the chance to get the team back together, Sara and Ray devise a plan to steal the Waverider back from the Time Bureau in order to stop Julius Caesar from conquering the modern world.
The Legends find themselves in 1870 to fix the anachronism which happens to be at P.T. Barnum's fledgling circus. However, Nate and Ray accidentally free a saber-toothed tiger, creating a bigger problem. Meanwhile P.T. Barnum (guest star BILLY ZANE) is on the hunt to capture Nate and Ray in order to make his show even more exciting for the crowd.
When Sara receives a distress call from their "befriended" agent at the Time Bureau she learns that they have been tasked with going to the future to capture a rogue time traveler. Unfortunately, the Legends make things worse by trying to protect an outlaw named Zari Tomaz (new series regular TALA ASHE) to hopefully lure in the time traveling assassin. Meanwhile, Stein tries to diagnose Amaya's condition but Nate discovers an unusual treatment that Amaya begrudgingly agrees to.