本剧改编自同名小说，讲述了住在老旧公寓的神秘老人·阿久津勇，喜欢一个人大声说话，因为奇怪的行为举止被邻居的女中学生怀疑，不过，那个行为的理由以及他的过去渐渐明了… 描写了后悔、追忆等人生细微之处的人性故事。

Mie’s father died during the aftermath of the 2011 Tōhoku earthquake and tsunami. One day, she finds a bundle of unsent New Year’s cards, which languished there for 28 years. To find out why the cards were never sent, Mie tracks down Haruhiko Sakacho. Haruhiko played on the same high school baseball team with her father. Mie eventually gathers together her father's former teammates to play in the Masters Koshien (a senior league baseball tournament). Mie also uncovers a truth about her father and the baseball team.

Haiji was an elite runner, but has not competed due to a past injury. He then meets fellow elite runner Kakeru who also left running, but caused by a dispute. Their meeting inspires both young men to run again, with Haiji choosing the fabled "Hakone Ekiden" (long distance relay race). The race requires a 10 member team so Haiji and Kakeru recruits 8 others (some of whom have never even run before). Within this unlikely group of runners a bond is formed through their training and a belief that they can accomplish the impossible.