Tenten Memorial Hospital, Japan's leading large hospital.Tendo Kaito, the son of chairman Tomonobu Tendo, hates hospitals and his father and works at Shinei Publishing.On the night when Kaito was about to propose to his lover Asahina Haruge, Kaito received the news that Tomonobu was ill.

Kaito walked towards the hospital hesitantly.Walking into Tomonobu's ward, her aunt and dean Tendo Ichiko, her son Tendo Yuma, and the chief of surgery Ayukawa Kenji were all standing there.

Kaito looked pained.Late at night, Kaito hears about the new ward project from Tomonobu's secretary, Minoru Takamura.Chishin wants Kaito to be the director of the hospital and give him the project.Kaito strongly refuses.Haruge takes care of her younger sister Asahina Misaki, who suffers from heart disease, while working as a nurse at “Paradise Memorial Hospital”.The newly appointed doctor, Otomo Ikumi, came to Yang Yue's ward.

It is said that he is a famous cardiovascular surgeon who left many achievements in his previous hospital.On the other hand, Yang Yue told Kaito that if he seriously considered the future with me, he also wanted me to meet Kaito's father. Kaito made up his mind and went to the hospital.

However, Chinobu's condition suddenly deteriorated in the ward, and Ikumi was undergoing emergency treatment.Tomonobu's condition finally stabilizes and Ikuya greets Kaito.At this time, Zhixin woke up...Finally, Kaito's fate began to change drastically.