Mr. Lu, a teacher from a well-known family, has been silently admired by Yao Yu for many years, who dotes on him like a younger brother. However, what Yao Yu does not know is that his teacher has already decided to devote himself to Buddhism for life, and it is impossible for him to reciprocate his love. In the process of the two getting along day and night, they experienced hardships and betrayals, and Haoyu even fell into dust and was imprisoned. Unexpectedly, a young man sent by the prince to monitor him developed an unusually deep friendship with him as classmates. He saved him and his teacher from danger when they were at their lowest. In the end, he was moved by Haoyu, and fell in love with him for the rest of his life.