In order to complete a special research project, psychological counselor Lin Zhi and top captain Gu Yan, who was grounded due to trauma, signed a marriage contract that stated "no heartbeat". She used professional means to analyze his hidden inner wall, but he used pilot-like directness to invade her overly defensive inner world. When the treatment is coming to an end and the contract is about to expire, this cold transaction that started with papers and cover has long since evolved into an irrevocable soul promise.
