Xiang Tingdong, the heir to the Xiang family of the Tangcheng medical family, was injured and fell into a coma during a dispute with his fiancée Cheng Che.In order to save Xiang's family, Cheng Che retrieves Xiang Tingdong's mysterious brother Ye Ran who was left behind, and asks him to pretend to be Xiang Tingdong to help him tide over the difficulties.The two worked together to uncover the poisonous cigarette gang that Xiang Tingdong colluded with, and finally eliminated it.