Appearing to be an ordinary man, Joe Logan enjoys a quiet existence in the countryside alongside his wife and child. In reality, the Logan family has adopted false identities to flee from Joe's history as a terrifying ninja assassin. Although a series of high-profile killings of his former colleagues has occurred, Joe remains confident that his new life is safe—until his peaceful happiness is abruptly destroyed when members of his old clan massacre his family. Found for dead, Joe regains consciousness in a hospital, uncertain how he survived injuries that should have been fatal. Police detectives Emma Samanda and Mike Moriss, tasked with investigating the deaths of the Logan family, observe another assassination attempt on Joe. This time, however, Joe is ready. Revealing hidden techniques, he effortlessly eliminates his attackers, thereby discarding his new identity. Returning to his former ways, Joe adopts his previous persona, slicing through the organization he once served to exact cold-blooded revenge. With the assistance of the detective pair, Joe will do whatever it takes to destroy his past and the demons emerging from it.