WARNING: If you don't want to know what happened in this episode, don't read this photo recap!
There was once a serpent who only traveled one direction. Always forward. Never backward. Thus begins this last chapter in the saga of James Cole, Cassie Railly, Doctor Jones and all of their time-travel splintering friends.
Doctor Jones recovers from the gunshot wound she got in the shoot out with Cassie and Cole. But she's barely hanging on. Remember when Jones THOUGHT that Athan was The Witness? Turns out, they were swindled all along and The Witness is actually…
Olivia. She's been manipulating everyone the whole time from her safe position aboard Titan, the time traveling city she runs. The team tries to plot their next move, but Olivia wastes no time and splinters right next to Jones' facility in the year 2049.
As Olivia's Army rushes into the faciilty, The Daughters hold them off and Jones wakes up just long enough to suggest their only hope: splintering away the entire facility with devices conjured up by her ex-husband years ago.
While Deacon creates a distraction to buy them all some time, Jones risks her life by fixing the core. She exposes herself to massive radiation. And all the while, the rest of the gang continue fighting off Olivia's Army.
As Cole and Cassie search their old room for clues, Cole comes across the drawing of that snake eating its own tail. He remembers a moment from his childhood. His father reading a story that began: "There once was a serpent who only traveled one direction. Always forward. Never backward."
As the gang realize they're stuck here unless they can get a new core for the splinter machine, Cole rallies the troops to go back to the facility in this time and steal one. They're not having it though. As Cassie says, "there's no mission. The mission is over."
Meanwhile, in 2018, while the plague ravages on, Jennifer Goines sneaks into a museum in Prague to steal that device we saw at the top of the episode. Whatever it is, she has a job to do. And she's doing it for someone important…
Uhm, herself. Team, Jennifer Goines is nuts. And the purple-haired version of herself turns out to be an imaginary friend. Still, Jennifer knows she's supposed to have gotten this device. She just doesn't know what she was supposed to do with it.
Finally, as Cole goes off to figure out if he can find the core at the old facility, he realizes that Hannah's been following him. As they come over the ridge, they see two people they recognize: Cole and Ramse.