Momo Tokigawa’s life falls apart when her mental health deteriorates, forcing her into long-term hospitalization. As her grasp on reality fades day by day, her cold-hearted husband visits—only to demand she hand over her shares. Crushed and vulnerable, Momo then uncovers a cruel truth: her husband and sister-in-law have been having an affair, and her breakdown was the result of their calculated three-year scheme. When she tries to fight back, she's silenced forever. But fate gives her one more chance. Momo wakes up three years in the past—at the very start of their betrayal. With her memories intact and her spirit hardened, she vows never to let them manipulate her again. This time, she’s the one pulling the strings. It’s payback time.