The Faction sets off nuclear blasts that destroy all of the Travelers' archives outside the US. David, left for dead by the Faction in the last surviving archive, is the only person who can disarm the nuclear device. He succeeds but is exposed to lethal radiation. Kat's suspicions about MacLaren, temporarily allayed, surge again and she throws him out – for her the marriage is over as she feels he is no longer the man she first met. Jeff tries to escape from interrogation by 001; he is eventually found having been walled up. Marcy hopes the Director will send a Traveler medical team to save David but no help arrives. In the moment before he dies, David conveys a message from the Director: "Protocol Omega."
Kathryn confronts MacLaren about an affair she believes he is having, leading him to end his relationship with Carly. Charlotte, the misfire historian, is overwritten and murders her team. She attempts to assassinate Grace, but Trevor stops her. Grace reveals that the anti-Director faction was responsible for the team's abduction. Charlotte is shot by Jeff while attempting to kill Carly. Ellis reveals that he has built a quantum frame that the Director, an advanced AI, can use to travel to the present to escape the faction. David is held at gunpoint by another assassin but is saved by Marcy. The team arrives at the farm where Trevor has received a text to destroy the frame. Boyd reveals she received an order to kill MacLaren and holds him at gunpoint; Carly later reveals having been given the same mission. Assassins surround the farm as Ellis shoots Trevor to keep him from harming the frame. Grace jumps in front of Trevor and is shot as well. Ellis shuts down the perimeter shield in the hope that the Director will help them and delivers a message to destroy the frame shortly before he dies. It is revealed that the people surrounding them are not anti-Director assassins, but FBI agents led by Forbes.
Vincent asks the team to stand down and let him finish what he has been planning. When the team refuses to comply, Vincent holds the lives of Kat, David, Jeffery, Ray, and Grace over them, and forces them to reveal themselves as Travelers to the world. The team must make the choice between breaking protocol and thus risking being overwritten by the Director, or doing what they must to save the ones they've grown to care about since their arrival in the 21st.

Flight Dallas - Las Vegas (DFW - LAS) $55+ Flight Los Angeles - Las Vegas (LAX - LAS) $55+ Flight Oakland - Las Vegas (OAK - LAS) $55+ Flight Seattle - Las Vegas (SEA - LAS) $55+ Flight Houston - Las Vegas (IAH - LAS) $72+ Flight Denver - Las Vegas (DEN - LAS) $77+ Flight San José - Las Vegas (SJC - LAS) $77+ Flight Houston - Las Vegas (HOU - LAS) $82+ Flight San Francisco - Las Vegas (SFO - LAS) $97+ Flight Chicago - Las Vegas (ORD - LAS) $125+ Flight Minneapolis - Las Vegas (MSP - LAS) $130+ Flight Orlando - Las Vegas (MCO - LAS) $131+ Flight Philadelphia - Las Vegas (PHL - LAS) $137+ Flight Washington - Las Vegas (BWI - LAS) $155+ Flight Atlanta - Las Vegas (ATL - LAS) $162+ Flight Newark - Las Vegas (EWR - LAS) $167+ Flight Fort Lauderdale - Las Vegas (FLL - LAS) $168+ Flight Boston - Las Vegas (BOS - LAS) $173+ Flight Washington - Las Vegas (DCA - LAS) $176+ Flight Detroit - Las Vegas (DTW - LAS) $177+ Flight New York - Las Vegas (LGA - LAS) $186+ Flight New York - Las Vegas (JFK - LAS) $219+ Flight Chicago - Las Vegas (MDW - LAS) $233+ Flight Honolulu - Las Vegas (HNL - LAS) $336+
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