在一个普通乡间小镇，马上迎来而立之年的富士冈耕太（大野智 饰）和父亲健二郎（三浦友和 饰）、母亲康子（岸本加世子 饰）、姐姐小春（ミムラ 饰）以及女友田边绘津子（木村文乃 饰）过着平凡的生活。大学肄业，工作始终没有着落，对于未来耕太似乎倍感迷茫，却从未想过生命的终点会这般迅速地出现在自己的面前。耕太被诊断患上死亡率为20%的恶性淋巴瘤，他被迫住进医院治疗。在此期间，病友信夫（山田凉介 饰）和心理疏导师大久保由里子（深田恭子 饰）给了他莫大的信心。血型配对成功，命运之神仿佛重新对这个青年露出微笑……本片根据幸和也的原作改编。

Kouta Fujioka is a 29-year old man who has a good family, including his father who always supports him, his mother who enjoys cooking, and his older sister with her bright personality. He also has a girlfriend named Etsuko Tanebe. Kouta wants people to eat delicious foods made by him and begins a job as an apprentice chef at a restaurant. One day, Kouta suddenly passes out and is sent to the hospital, where he is diagnosed with malignant lymphoma, completely changing his life. Given three months left to live, Kouta makes up his mind, with the support of his family and those he meets at the hospital, to accept his fate and "face a proper death".

片田舎の温かい家庭で生まれ育ち、何事にも中途半端に生きてきた普通の青年・富士岡耕太。そんな彼を、ある日突然悪性リンパ腫が襲った。辛い治療の日々に翻弄される中、様々な人との出会いにより、耕太の中で何かが変わっていった。 寛解、そして、再発。余命宣告を受けた耕太は自らの命の期限と向き合い、「ちゃんと生きて、ちゃんと死ぬ」ことを決意する。

한 남성에게 갑작스럽게 찾아온 암, 그리고 시한부 3개월 선고. 고통스러운 투병 생활 중 자신의 운명을 받아들이는 29세 남자의 이야기.