12歲的翔與母親美穗相依為命,生活困頓,彼此卻因代溝與壓力頻生摩擦。一次修學旅行通知單意外,讓翔結識老人一雄,在對話與衝突中,翔逐漸理解母親的辛勞,而美穗也體會翔的孤單。母子終在海風中重拾彼此的心。
In Okinawa, 12-year-old Sho struggles with loneliness and his mother's absence. A quiet summer and an unexpected friendship help him understand her love. Years later, a moment with his own child brings those memories rushing back.