Season 1 Researchers from the
CDC, led by Dr. Alan Farragut and Dr. Sarah Jordan investigate a viral
outbreak at an
Arctic bioresearch station, only to discover that it has disastrous and wider implications for the entire world. Proscribed
genetic engineering research is being done by the Ilaria Corporation, the company running the research station, most interested in preventing exposure of their activities, rather than simply resolving the outbreak. Attempts at quarantine result in mutiny and attempted escape, and communication with the outside is mysteriously cut off. It is unclear at first whether the goal is to develop a
bioweapon or to transform humans in some way. It is discovered that there are two variants of the virus: the first, Narvik-A, is fatal with no cure; those infected with the second virus, Narvik-B, become dangerous, violent,
zombie-like
vectors, spreading the infection to others, with a small percentage eventually regaining some normality if treated, as it seems several characters have already been infected and cured. Those cured seem to have the ability to control the infected. The outbreak is revealed to have been a cover story to recruit Julia Walker as an unwitting test subject by deceiving the CDC personnel into creating an antiviral "cure", to benefit the Ilaria Corporation's objectives. After becoming infected, Julia is cured by the station director, Hiroshi Hatake, who reveals he is her father, quasi-immortal and over 500 years old, as indicated by his bright silver eyes. He had created the Vector virus as a means to activate dormant genes within Julia to give her a similar variation of immortality. Ilaria, which is run by a similar group of immortals, wants the virus in order to exert control over the world. Ilaria's
Chief Operating Officer, Constance Sutton, arrives with a mercenary army, and despite a protracted resistance effort by the CDC and base personnel, butchers most of the staff before abducting Julia. A cliffhanger, set almost eight months after the pilot episode (on Day 235), shows Alan meeting with his brother Peter somewhere in France, following a massive outbreak of the virus, to plan a border crossing. Alan is apparently oblivious to the fact that his brother is actively working with Ilaria and that Julia is an active member of Ilaria's immortal
Board of Directors.
Season 2 Set once more in a remote, isolated place, this time the island of St. Germain, inhabited by members of a religious community going back several generations, the second season takes place approximately fifteen months after the events of the first season, with regular sequences showing events taking place an additional thirty years later on the same island. Alan, who has been interrogating and then killing immortals in his search to rescue Julia, has been discredited by the CDC. Peter leads the three-member team investigating a new outbreak on the island. In the future, Julia is on a quest of her own. ==Cast==