Twenty years ago, Wu Qing, a professor at Qicheng University, took his pregnant wife on his way back to his hometown, and then disappeared. Professor Bai disappeared without any reason while searching for the whereabouts of his student Wu Qing. Everything seems to be related to the smoky and inaccessible island in the North Sea. Twenty years later, a girl with a strange disease graduated from school and came to Lingshan Town to find a job in a mysterious tea shop. The boss Zong Qi, who has been traveling for a long time, Zifu who is gentle and gentle in charge of everything and likes to study tea, Da Ze who is very nervous, and Uncle Jiu who never sees the end of the dragon. Are they really human? Mingzhai, the son of a painter who returned to China, became Shi Shengsheng's tenant, and Jiang Zheye, a medical student with the same disease as Shi Shengsheng, returned. Everything seemed to have its own arrangement...