Aya, who works alongside her husband Takeshi at the Far East Investigation Bureau, is assigned a crucial mission to infiltrate a hospital. But from that day onward, their fate takes a drastic turn. During the operation, Takeshi is drugged by unknown assailants and returns in a brain-dead state. Overcoming his death, Aya vows to avenge her husband and expose the evil lurking within Inoue Hospital. Disguised as a female doctor, she launches an undercover investigation once more. As she uncovers sinister conspiracies involving illegal drug development and organ trafficking, Aya is pushed to the brink, forced to make immense sacrifices in her high-stakes mission. This story portrays a woman's strength in fighting for her loved one and reveals the dark truths hidden in the shadows.