Lu Yu has been depressed since her engagement. The reason is that her fiancé is gay. He confessed his sexual orientation to her the day after the engagement and wanted her to be a shield for a few years. That's not all, he also took his little lover to live with him, which forced her to make up her mind to bring her fiancé back to the right path... Under the same roof, what kind of sparks will burst out between three people with ulterior motives...