Hirosue and Nagase will play a married couple in this tearjerker, based on a true story of two parents who are told that their daughter Miho (played by Manatsu Kimura) has one year left to live due to a brain tumor. The drama depicts the family's remaining time together, including the 359 letters that Miho drew before her death. --Dramawiki

美穗幼年时患白血病、中学时又患上了恶性脑瘤。美穗的母亲将美穗与病魔斗争的生活，以及美穗的手绘信构成了这本书。美穗在中学1年级入学式的那天突然头痛，检查后被诊断为恶性脑肿瘤。母亲理子(广末凉子饰演)和父亲照生(长濑智也饰演)几近绝望。接到爸爸照生送的绘画工具，美穗就开始每天在医院的床上画画，渐渐受到了周围的注目……