Shattered by recent losses and a sweeping new protocol, the Travelers face a bleak future with only one long-shot chance to succeed in their mission.

MacLaren urges Yates to help him when a Traveler with a mission vital to humanity’s survival arrives in the body of a just-captured serial killer.

Walter travels to the Alternate Universe to assist in the investigation of a Fringe event with ties to both worlds. Meanwhile, David Robert Jones reveals his next target.

With Mary Margaret in labor and due to give birth at any moment, the residents of Storybrooke go on high alert in an attempt to ensure that Zelena doesn’t try…