Wang Hao and his wife Chen Jing have been married for many years. Their daughter is well-behaved and her mother-in-law helps take care of the housework. Their life seems peaceful. Until he came home by chance and overheard a secret conversation on his mother-in-law's phone, and he became suspicious. Then the mother-in-law suddenly returned home, but his wife accused him indiscriminately. All kinds of abnormal details made him suspect that this seemingly happy marriage hid some unknown secrets.
