The Rivers family has finally moved on from all the trouble that has upended their lives for the last several years. Things in Drake Harbor have come to a calm.

Or have they?

Is this just the calm before the storm?

Kevin "Hawk" Hawkins and his partner Cole Dekker have a new case. A man has been murdered and there are no clues as to why. As Hawk and Cole dig deeper, they discover a dangerous plot that threatens to destroy the entire town of Drake Harbor.

Nobody is safe from this act of bioterrorism. Hawk and Cole must stop the person behind this attack or they could lose the very people they love the most.