- It has been one and a half years since Aizawa Kosaku, Shiraishi Megumi, Hiyama Mihoko and Fujikawa Kazuo were assigned to Shoyo University's North Hospital. They have only three months left of their fellowship programme (specialised training programme) to be flight doctors and each of them have come to the crossroads where they have to think of their lives after graduation.
Aizawa, who has only one relative - a grandmother currently in a nursing home, starts having doubts about his duties and cannot find a clear direction for his future. Meanwhile, Shiraishi Megumi is unable to forget the past. She had caused their former teacher, Kuroda Shuji, to have his right arm amputated. Then Tachibana Keisuke, a veteran flight doctor, takes up a new post. He has been put in charge of certifying the fellowship programme which will decide their future.