When he was young, he was Mu Hengzhi, a down-and-out scholar, and she was Tang Tangyi, the daughter of the Hou family. Under a begonia tree, he once promised to destroy all the begonias in the world just to get her smile. But her family blocked her, and a letter of annulment forced him to leave the country, and she was forced to marry into a high-ranking family. When they reunited many years later, he was already the powerful regent, and she became the widowed lady of the marquis. Begonia's keepsake from the old year reappears, and he presses forward step by step, but she retreats steadily. Misunderstanding, resentment, and unwillingness were entangled in her heart, but when he asked in a low voice, "Tang Tangyi, have you ever really loved me?", Her tears finally burst. The court is turbulent and the family is at odds with each other. Is their reunion a disaster or fate? Begonia flowers bloom every year, but this time, he just wants to destroy all the begonias in the world just to keep her promise.