The drama tells the story of Riko Komukai, the second daughter of the Komukai family who works as a temporary worker in Tokyo. She is caught between the capable eldest daughter and the free third daughter. The three sisters of the Komukai family gathered together after the death of their grandfather. After 4 years, the whole family finally reunited. Riko found a half-made plastic model while sorting out her grandfather's belongings. She met Miyabi at the "Yajima Model Shop" where her grandfather often went. Under his guidance, she began to try to make plastic models. Through the plastic model, Riko got to know her grandfather and his family a little bit. She decided to stay in her hometown during the summer to make up for her grandfather's regret.