Affected by the reform of the medical system, the once prominent university hospital, Teito Medical University Third Hospital, has lost outstanding doctors due to the deterioration of medical conditions and excessive work pressure. The loss of talent has put the hospital's development in jeopardy. Against this background, free doctors who do not belong to the university hospital and the medical bureau system came into being. The beautiful and sexy surgeon Daimon Michiko (played by Ryoko Yonekura) is a member of the free doctors. She is called "Doctor X". She hates gangs and medical corruption, like a thorny wild rose blooming in the quagmire. The arrival of Michiko has brought an unprecedented impact to this pedantic and stagnant hospital, and her excellent surgical skills and theoretical knowledge have made her peers admire and envy. The trembling newcomer Morimoto Hikaru (played by Kei Tanaka) is responsible for leading this legendary figure who has been involved in overseas. Michiko will face various difficult and complicated diseases and invisible obstacles...