A huge discovery by our young fans is interrupted when they are thrust into the dangerous world of Jessica Hyde. Meanwhile, two doctors with very different career trajectories are both pulled into the path of a deadly flu.

Jessica continues to hunt for answers while our underdogs must make a crucial decision. Michael is done being pushed around.

Inside the St. Louis Hotzone, Michael must make a life-or-death choice. As things grow increasingly dangerous, Jessica comes face to face with someone from her past.