After five years of marriage, a husband finally takes a long vacation with his wife Yuki Takeuchi at a famous casino resort. Yuki is thrilled, but he keeps prioritizing work and barely pays attention to her, never realizing how much she had anticipated the trip. Left alone, she meets another man by the pool. Their connection quietly grows deeper, and by the time her husband notices, she is already engaging in a shockingly bold act with the stranger at the night pool.