Lin Xiaoxi, 33 years old, graduated from college, is a full-time housewife, her husband is a dull civil servant, and her son is 6 years old.
By chance, she met Gu Zhizi, a successful man who ran a company, had a family, and was also trapped in a loveless marriage.
From a private message to the first meeting, from the first cheating to the fifty-seventh tryst. For five years, two married people secretly built a world between the two cities that only each other knew. The code in the hotel, the web of lies, the "see you next time" every time they parted - they thought they could go on like this forever, having the security of marriage while enjoying the excitement of taboos.
But the reef will eventually break through the bottom of the ship.
When her husband broke into the house with a detective, and his lover's wife came to the door, and when all the secrets she had accumulated for five years were exposed overnight - Lin Xiaoxi discovered that the love she thought was just a ship that was already riddled with holes.
Divorce, loss of custody of her son, social death, her lover finally chose to return to the family... She used the joy she had stolen in five years to pay the price for the rest of her life.
This is not a story about cheating and getting married. This is the story of a woman who learns to shine again in the abyss.