Lieutenant Commander, Owen Johnson, a decorated military officer, holds on to the guilt of losing men in a Special Forces operation. After resigning from his role at the Navy SEALS, Owen is once again called back into the role of an operative after he learns that an alleged Middle Eastern terrorist about to be captured is possibly the same person who arranged the ambush in which Owen's men got killed.
By the time, Owen and the crew of the aircraft carrier USS John Doe return to the US, a zombie virus has taken over the world and wreaking havoc everywhere. When survivors on a fleet of boats and ships start running out of time with food supplies being low, their only option is to take back land from the infected. Now, Owen must not only face demons within himself but also the monsters on the outside, with the help of his new team, Callum, Sally, Joe, Turo and others.
Even though feelings between Owen and Sally Moss, his co-pilot, are no secret, the line was never crossed. However, with the unknown fate of Owen's fiancé and the high possibility that she has joined the millions of infected, will the two get together and aid in the survival of the human race?