An Ershu has been secretly in love with his brother-in-law An Huan for more than ten years, but he never dared to confess his love and never thought about confessing. One morning she received an anonymous letter, which said: If you don't catch An Huan within three months, there will be consequences! After truly being proud of the "consequences", An Ershu began the vigorous but cautious "underground" daily pursuit of his uncle...