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Dr. Peter Farragut and his ex wife Dr. Julia Walker are called to an arctic research facility in order to investigate Peter's brother, Dr. Allan Farragut's, infection with an unknown virus that seems to give him further strengths. Things are not what they look to be on the arctic research facility.
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As Dr. Alan Farragut (Billy Campbell) accelerates the hunt for his infected brother Peter (Neil Napier), the quarantine of three scientists threatens to create panic at the lab. Doreen (Catherine Lemieux) finds evidence that Dr. Hatake (Hiroyuki Sanada) is lying about his research.
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Julia Walker seems to have survived her encounter with Peter Farragut but her memories are incomplete and she isn't truthful with Alan about just what happened. Alan's full attention is on Peter who surprisingly turns himself in. At Dr. Hataki's insistence, they turn an abandoned floor into an isolation wing, not only for Peter but for all who may be infected. The infected monkey Doreen found disappears from the lab but Balleseros has a solution for her. When she tries to grow the virus in the lab, she gets surprising results. Sarah develops a rapid response test and they find nearly one-third of the lab workers are infected.
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The quarantine floor has been sealed off but now that the communication satellite dish has been destroyed, Dr. Alan Farragut worries about their future. In particular, there is only one week's food on that level. In the quarantine itself, Julia tries to calm those who think they've just been locked away to die. They find a way to get some attention. She also finds someone lurking in the corridors. Alan wants to use the universal vaccine the lab has developed on his brother who he thinks is on his last legs. Sarah works with one of the scientists who thinks she is infected. She finally comes clean about the rapid response test not working.
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Constance Sutton, COO of the Ilaria Corporation - the research lab's financiers - arrived at the base. She tells Alan that her only reason for being there is to help him but privately takes Hatake to task for having created the virus, as ordered, but not having yet created the cure. On Level R, Julia continues to hallucinate and has trouble dealing with her silver eyes. Alan wants her back and Sutton's agree to extract her. Hatake tells Julia that Sutton is out to kill her. She seems to be virus free. Anana and Ballesteros return to the lab where she confronts Daniel and tells him of his origins.
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Alan (Billy Campbell) risks his life to save his brother Peter from Ilaria CEO Constance Sutton (Jeri Ryan), only to see him re-captured by Vectors. Julia Walker (Kyra Zagorsky) deals with the mystery of her "cure" while her half-brother Daniel confronts their father, Dr. Hatake (Hiroyuki Sanada), about being abducted as a child.
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The Vectors - 50 or so - seem to have disappeared and Alan learns there is another level below Level R - Level X, the virus vault. He and Julia set off to destroy the core virus samples in the vault but in order to do so, they will have to immobilize the Vectors - by lowering the temperature in the facility to match outside temperatures. On level X, they find something out of Julia's past. Hatake warns everyone that the war is not over and that Ilaria will not simply give up - they can now expect an army to come and take the virus. His relationship to Julia is revealed.
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Hatake finds surveillance video showing Victor Adrian with the Narvik vaccine and leaving the facility. He tells Alan that Adrian could not have survived the weather and must be dead. When Alan learns that there is an abandoned satellite station just 50 miles away, he and Julia set off to him and hopefully, the vaccine as well. What they are not prepared for is what they find in the facility's underground storage. Back at the lab, Sarah makes an important discovery and manages to record her findings before she loses consciousness. Daniel, Ballesteros and Anana flee the village.
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With the injection of Julia's spinal fluid, Sarah's tumor seems to be shrinking. Julia, who finally tells Alan she didn't destroy the Narvik virus, may have found a way to destroy it after people are infected. Dr. Duchamp tells Peter that people are disappearing from the facility. It seems apparent that, after a two day hiatus, the Vectors have returned and are now setting traps for humans. Hatake sees a text message on Constance Sutton's phone telling her that she is to be picked up in 6 hours. He now expects a strike team of at least 100 mercenaries to arrive. His plan is to draw them inside the facility and then destroy it.
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Alan (Billy Campbell) and Peter capture the assassin Scythe and demand to know the whereabouts of Julia's (Kyra Zagorsky) mother. Balleseros confronts Hatake (Hiroyuki Sanada) about the missing Inuit children, while Anana and her brother learn of Daniel's fate. Concerns that the virus is in Ilaria's possession again forces Alan and the team off the base to search the world in order to retrieve it.
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15 months after the events at Arctic Biosystems, a new CDC team with the addition of biotoxicologist Kyle Sommer respond to a potential outbreak on a Windjammer in the Northern Pacific. Their search leads them to an island occupied by a mysterious cult led by the charismatic Brother Michael. Meanwhile, decades in the future, Walker arrives at the same island searching for Alan Farragut.
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A sick child appears while the team is investigating the island, but Sarah suspects something is amiss when the child is miraculously healed; Julia and Caleb make a discovery that furthers the mystery of the island when they dig up Alan's grave.
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Peter and Jordan leave the safety of the Abbey to retrieve some specimens and discover just what's living in the woods, meanwhile Sister Amy plots to make them leave forever. |
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Michael struggles to keep the abbey under control as the CDC team move closer toward tracking the source of the pathogen; at the same time...
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Peter reveals his brother's secret and gets them both in trouble, meanwhile Kyle has his hands full trying to quarantine the orchard and the infected hive. |
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Things go from bad to worse on the island. Elsewhere, Walker decides to go to St. Germain after learning about Brother Michael. |
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The Coast Guard arrives on the island to take the CDC team to another island to deal with another outbreak of the pathogen, meanwhile Sister Amy has to contend with Brother Michael and his plans. |
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Walker and Balleseros arrive at the Abbey while Alan, Kyle and Winger are out in the woods searching for the tree with red sap that might be a cure for the pathogen. |
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At the Abbey Sister Amy makes a bargain for immortality, while in the woods the race is on to find the Bleeding Tree now that Kyle is infected. |
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Walker prepares to implant Jordan's baby into Amy while the Navy prepares to implement Plan B, a final solution to ensure the virus and all infected people never leave the island. |
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While Kyle and Jordan try to escape the island as the followers hunt them, Walker and Alan search for the Mother Tree so that Walker can halt ILARIA's deadly plan. |
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In the Season 2 finale, Alan's relationship with Walker reaches a bloody climax, while his sibling feud with Peter erupts in flames. Elsewhere, Kyle does his best to protect a possible cure for the mycosis. |
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