During an update for historians, one of them dies from cerebral overload and is taken over by another traveler. The faction then breaks in and kidnaps the historians. A Blackbox is a device used to extract information from an unconscious or dying person and the team uses one to access a critically injured Hall to ascertain the location of historians. Jeff reaches out to his police sergeant to get his job back and is told to get help from a social worker first. Philip is questioned by the faction. Philip is given time with Kyle as a gesture of good will, who states that he sympathizes with the faction's goal, especially since he just saw another historian die during the update. Faction saves a TELL that Kyle provided to gain his support. Jeff reaches out to David to sign his therapy form for him to get his job back. David agrees to help as a social worker with Jeff's addiction, which the traveler doesn't actually have. Hall is able to relay information from when he was tracking his team's historian showing he ran into a faction team and was shot climbing a fence. He reveals that it was Kyle and Luca from his own team that shot him. Hall is able to show the team the location of the historians and the team is dispatched. While with David, Jeff receives a message to meet up at the location for tactical support. Philip is able to escape before being cornered by Kyle and Luca. Maclaren's team shows up just in time to save Philip and kills Luca and Kyle. The team saves all the historians while taking out many of the faction. Hall is told he saved them all and is able to pass away in peace knowing that. Jeff and Carly reconnect. Philip is seen throwing out his yellow pills that historians have to take.
A suicide bomber and his victims are set to become travelers, but the bomb explodes and only Donner, the bomber, survives. Devastated by his failure, Donner tries to betray the traveler program to the authorities, but the entire hearing is populated by travelers who hold a trial and convict Donner of treason. Donner is overwritten by a new traveler, who must serve Donner's prison sentence, and reports that things in the future are getting worse despite the changes enacted by Traveler teams in the 21st. Luca approaches Donner in prison, implying that he has lost faith in the Director. Ken, David's boss, believes David's relationship with Marcy is inappropriate. Upon meeting Marcy, he believes she has defrauded the system. Marcy saves David's job by repaying her benefits. Grace, Trevor's guidance counselor, and Jacqueline, Carly's social worker, genuinely care about them, respectively. Grace tries to help Trevor with his academics, and Jacqueline promises that she will not let the system fail Carly and her child. Philip discovers that gambling outcomes are deviating slightly from the historic record.
A century ago, Shanghai was China’s star city, a cosmopolitan center of art, technology, and finance. Today, it’s reclaiming that mantle, parlaying the economic boom that began in the 1990s into a world-class array of cultural and culinary attractions. On the West Bund riverfront, Tank Shanghai will transform disused oil tanks into a sprawling arts complex with a gallery, an education center, and parks when it’s completed later this year. Farther north, the Norman Foster and Thomas Heatherwick–designed Fosun Foundation, with its façade of shifting bronze cylinders, began hosting performances and art shows last fall. The North Bund is being redeveloped with a park linking it to a new lifestyle development that’s anchored by the city’s first W Hotel. In the residential Minhang district, Cordis debuted in May, and Amanyangyun will open nearby after relocating Ming and Qing dynasty buildings, as well as 10,000 ancient camphor trees, from Jiangxi province. More luxury stays are still to come in 2018, including the Middle House, the Bulgari, and the Edition. —Samantha Culp
In 2018, four unconnected people suddenly undergo personality changes at what would have been their moments of death: Marcy, a young, intellectually disabled woman, is assaulted but fights off her attackers and is no longer impaired; high-schooler Trevor concedes a mixed martial arts fight after being overmatched; heroin-addicted college student Philip drops his syringe just as his roommate injects a fatal overdose; and young mother Carly stares down her baby's abusive father. FBI agent MacLaren tracks their subsequent communication and confronts them; they reveal that they are among thousands of time travelers sent from the future to avert a global crisis, and that MacLaren was to die that night while pursuing a murderer they have already killed; MacLaren is taken over by a fifth traveler, who happens to be the team's leader.
Philip, while under the influence of drugs, commits to memory an anti-viral formula sent via messenger. The information is passed on to fellow Traveler Derek via Jenny so it can be synthesized and distributed to other Traveler teams as well as people targeted to be saved in order to minimize the spread and mutation of a flu like virus that historically killed 70,000 people. However, two weeks after dissemination, people around the world start getting sick with a virus even more dangerous than the original one. With no contact from the Director, and the death toll rising, Marcy and the team rush to find a solution before it's too late.

Three high-ranking Travelers are sent back by the Director to put Grace on trial for violating protocols, overwriting a person who was not assigned to be her host, and sabotaging the Grand Plan. Mac and the team must give testimony at the trial that will determine if she should be overwritten or not. Meanwhile, the Faction is trying to replenish its numbers by overwriting people with the stored minds in the Quantum Frame. It transpires the trial was staged by the Director to flush out a Faction member from within the three Travelers judging Grace, which it successfully does, this leading to Mac's team securing the Quantum Frame.
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