Su Wantang traveled through time and became the concubine of Xiao Ji, the sick prince of Yangzi. She fully thought that after becoming a widow, she would be able to live in peace and retire. Who would have expected that this husband who coughed up blood would tear off his disguise after he ascended the throne, press her on the dragon chair and monopolize her madly: "Tangtang, my illness, only you can cure me." The shadow of being poisoned in the previous life, the brothers who were eyeing him in the court, the secret chess buried by the Queen Mother... When Su Wantang was forced to get involved in the vortex of the heir apparent, he discovered that the sick cat he rescued was actually a dragon pretending to be sick.