Hunter Greenbush remains in and out of a coma while the Redbrooks are busy working and trying to understand all the research they have found so far. Once again, they are in the midst of some odd and crazy things. Just as J.J. Redbrooks is starting to feel better, he gets a weird feeling in his gut. They head out of town for a week of vacation to clear their minds, only to stumble upon a mysterious locked chest. The question remains: What is this virus, and why has it come back?