Ann, having moved to her mother's hometown in rural Shimane after the divorce of her parents, struggles to get used to her new surroundings, until a tragedy forces her to appreciate the people around her.
As Ann revisits places and people from her past, she is driven to an impulsive act and wonders who will stand by her now and if she will ever find peace.
Describes how the destinies of the mothers of Ann, Daigo, Fuji, and Shika were shaped when they were teenagers as well as Ann's sister's visit to New York City to see Shika and Ann's ex-fiance?..
Ann wonders if anyone will be able to take the place of her first love when she and Daigo decide to date other people, and later she learns a secret about her father's romantic life.
Shika is determined to steal Daigo from Ann, but the reintroduction of a girl from their past complicates the situation; and meanwhile, Fuji makes a play for Ann's affections.
Ann, having made a new life and good friends in the country following her parents' divorce and her mom's suicide, does not know what to do when her father asks her to come and live with him in Tokyo.
Ann has finally settled her emotions over her mother's suicide and Daigo is reunited with old classmates to unearth the time capsule they buried as ten-year-olds and is reminded of the future he once dreamed about.
Twelve-year-old Ann moves back to live with her father in Tokyo after the death of her mother, but wonders how she will be able to keep in touch with her friend Daigo.
