32-year-old Ryota Toono lives with his wife Miho, who is three years younger. About half a year ago, she started working part-time, and they cherished their bond in daily life. One day, he secretly checked his wife's smartphone and discovered a video of her sucking a large cock that wasn't his. Burdened with shock and unease, he went to her workplace when she came home late. There, he witnessed his wife moaning on the store manager's huge cock. The unfolding scene shatters the couple's bond as the NTR betrayal intensifies.