In 2012, Atsuya (Ryosuke Yamada) along with his 2 childhood friends do something bad and rush to an old general store. They opt to stay there before dawn. Late into the evening, Atsuya sees a letter from the mailbox. The letter is addressed to the Namiya General Store and the letter has been published by someone to consult regarding worries. Incredibly, the letter has been written 32 years ago. The mailbox is connected to the calendar year 1980. Atsuya along with his pals decide to compose a response and place their letter.