夏休み、実家に帰ったリコ（与田祐希）は何もしない１日を満喫していた。そこへリコの帰省を聞きつけた幼なじみの大石ユキも訪ねてきて、一緒にBBQをすることに。会話も弾む中、とあるプラモデルを見つけ家族の思い出を懐古するリコにある衝撃の出来事が…！混乱したリコは無意識に矢島模型店へと足を運び…
During summer vacation, RiKo (Yuki Yoda) returns home and enjoys a day of doing nothing. Riko's childhood friend Yuki Oishi also comes to visit after hearing about Riko's return home, and they decide to have a BBQ together. While the conversation is lively, Riko discovers a plastic model and reminisces about her family, and something shocking happens...! Confused, Riko unconsciously heads to the Yajima model store...
