One month after losing her husband, Emiko finds herself gradually healing with the warm support of her late husband's older brother, Hiroki, and younger brother, Keisuke. However, when she checks the lottery numbers her husband used to buy every year, she discovers they've won a massive jackpot. Wanting to honor her husband's memory, Emiko decides to keep the ticket unclaimed. But from that moment on, she notices a strange shift in her brothers-in-law's behavior. As middle-aged men driven by greed begin closing in on her, Emiko's heart and body are drawn into a dangerous web of desire and manipulation.