Jensen Davis is a Medal of Honor winner, and is one of the highest decorated scout snipers in Marine Corps history, which means when he's deployed, he's never home. Jensen's life is anything but ordinary and he's hardly a model husband and an even worse father figure to his young daughter.
When an accident in the field lands him on leave, he notices something with him isn't right. It's after a routine medical check up diagnoses him with cancer, he is forced to make a decision. Live for two more months, or undergo a dangerous experimental genetic treatment that could save his life. After spending time with his young daughter, he decides he must choose the treatment if he wants to live and be the father he never had.
It's soon after the procedure that he notices the changes. The constant hunger. The enhanced sense of smell. He can pick up the slightest sound blocks away.
Then it happens. He turns.
As he searches desperately for a cure, he uncovers a deadly plot to use the genetic treatment he was administered to manufacture an army of humanoid super soldiers. It's then that he realizes he must protect the only person who hasn't disowned him. His daughter.