NorBAC must find the creator of the weaponized biological agent that was released during fires on the West Coast. Rachel's son is attacked by a bear while researching a sudden change in their behavior.

Bob undergoes his eye surgery in the hope he won't go totally blind in the process but his prognosis is uncertain. In Nova Scotia, a ship's crew goes missing and the captain is the lone survivor,but he can't remember anything from the past two weeks.