依山田貴敏漫畫原作《孤島診療所》改編成的電視劇。而山田又依「Dr.瀬戸上離島診療所日記」來畫作。此劇在距臺灣僅111公里遠的與那國島拍攝（片中亦多次提及臺灣），全劇描寫一位原是眾所公認前途無量的優秀醫師，因為發生某個事件，毅然決然決定從東京來到沒有醫師、缺乏醫療環境的離島志木那島。在另一位島上土生士長的護士幫助下，一起協助島上居民對抗疾病，同時二人間也發生了一連串互動的感人故事。

五岛健助（吉冈秀隆饰）原本是众所公认、前途无量的优秀医师，因为发生某个事件，而毅然决然告别女友（石田百合子饰演），志愿千里迢迢从东京来到没有医师、缺乏医疗环境的南海孤岛－志木那岛。由於离岛医师一向流动性很大，因此居民们多半对他采取怀疑而不友善的态度。即使如此，五岛医师仍本著以生命为尊的信念，与同样充满正义感的护士彩佳（柴崎幸 饰），在有限的资源下灌注热情，两人三脚共同面对一切病魔

After making a serious mistake in his work in Tokyo, talented surgeon Goto Kensuke is invited to take charge of the only clinic on the small island of Yonaguni, Okinawa. It is difficult to get competent doctors to serve on this remote island, and the islanders are now used to traveling for hours via boat for proper medical care. Despite seeming weak and unreliable (he gets very seasick, and does not have a driving license), he wins over the skeptical islanders with his skill and dedication. Some children of the island make a flag for his clinic, but get his name wrong. Thereafter he is known by all as Koto.

南海の孤島に一人の青年医師・五島健助はやってきた。 満足な医療設備も整わない診療所。なかなか受け入れてくれない島民たち。 命の尊さを何よりも大切に思う健助は、ひるむことなく誠実に病気に立ち向かっていく。

남부의 작은 섬의 의사 고토가 현지인과 교감을 나누는 과정을 그린 드라마