The plot of the film sees a U.S. military veteran — Sergeant Rick Pedroni — return home changed and dangerous after a tour of duty in Afghanistan where he suffered an attack by a mysterious force. While officials dismiss his behavior as PTSD, and order trauma therapy, Rick's wife Kate discovers her husband has been possessed by a malevolent spirit. Kate has to race against time...
A couple celebrates their son's birthday in the middle of the ocean on their boat . A violent storm hits and it brings up hungry creatures from the depths and they fight for their survival.