Yuka Shibuya, a struggling actress, and Hatsue, a widowed chestnut farmer, meet a mysterious, bloodied man in the farm. The three end up living together during chestnut season and form a special bond while a miracle slowly unfolds.
At a high school entrance ceremony, high school student Kotoko Aihara, who isn't that smart, notices pretty boy Naoki Irie. She falls in love with him immediately. Kotoko initially doesn't express her feelings to him, but finally has a chance to tell him how she feels. Unfortunately, Naoki turns Kotoko down, saying "I don't like dumb women." One day, Kotoko Aihara's house is severely damaged by an earthquake. Until the house is rebuilt, Kotoko Aihara and her father decide to live with her father's friend. When Kotoko Aihara moves to her new temporary house, she is surprised to learn that Naoki Irie lives there as well.
The Hayashidas were a typical happy family of father, mother, two boys and two girls. Until it all changed suddenly with the untimely death of the father, Shinpei. While still mourning his passing, the children are hit by another bit of shocking news from their mother “Truth is… I'm pregnant.” The news of their mother's pregnancy at 51 sets into motion a new series of challenges for the four children, particularly for the eldest sister, Manami, who now becomes the family patriarch, forced to struggle with the pressures and responsibilities of “child rearing” and “family ties”, not to mention greater philosophical questions about the meaning of life. A moving, life-sized human drama..