Wang An falls into self-doubt due to his NTR fetish, leading to a quarrel with his wife. His wife, Li Rongrong (played by Li Rongrong), goes for a private meeting with the vegetable vendor, and Wang An secretly catches them in the warehouse. A few days later, the vegetable vendor and Wang An's wife, Wang Li (played by Li Rongrong), visit Wang An's home. Wang Li tells Wang An that they are all the same kind of people and urges him to accept their true selves. Thus, an unspeakable secret shared by only the four of them is formed...