Shiyue, whose marriage is like a cage, formed a "revenge alliance" with the prodigal son Qin Zhao after discovering her husband Zhang Zhiyuan's cheating. The two are alienated in front of each other and entangled in others, and sincerity emerges from each getting what he needs. After joining forces to defeat Zhang Zhiyuan's threat, Qin Zhao breaks his vow of celibacy and proves his loyalty with actions, while Shiyue also puts aside her trauma and bravely faces love. The calculation that started late at night eventually settled into mature and firm love.