Heaven and earth, there is only one place in this world where there is real freedom, that is, Penglai. I must take you there. Because only there can we fall in love. Deep in the alley, surrounded by the courtyard, a three-story quaint Italian-style western-style building seems to stand outside of time and space. This is the Yanyu Hutong Clinic No. 18. If you want to treat a disease, you will use the most valuable things as a consultation fee. Bai Qi, a real doctor who is a mystery man, Lin Xia, a half-hanging singer, actress, model, roommate and hostess. What kind of world will the Yanyu Hutong Clinic 18 usher in?