A mysterious young man left for dead with a gunshot wound to the head jolts awake after months in a coma. Realizing that the man has lost his memory and identity, young nurse Ailin renames him Ishmael. Their peace is short-lived when Ailin is violently taken by ruthless criminals. Determined to save the woman who rescued him, Ishmael has no choice but to accept the dark truth that a lethal personality awakening within him is the key to revealing his identity.