Xiao Ziyao, who had always been free and easy by nature, went to medical school in a muddle. How could such a rigorous and rigid life be to her liking? Before he could vent his depression, he met a strange senior brother. He didn't know where he offended this piece of wood... Mu Chengyi, who was quick-thinking, clever, and born to be a doctor, inexplicably disliked each other with the new junior sister... A few years later, he was surprised to find that in his boring and busy life, there was this warm and bright color.