阿晃带着学长吉冈回到家乡尾道，百无聊赖的两人，和阿晃的青梅竹马文江及好友小咪一起出游。四人漫无目的地晃悠，抽烟、跳舞、游泳，随着嬉皮音乐摇摆，畅谈三岛由纪夫。夏日炙热暧昧如汗淌流，文江发现阿晃对吉冈有着特别情愫，但吉冈的眼光却停留在小咪身上。1970年的夏天，愤青反美正盛。海水正蓝的季节里，一段段不被祝福的恋情，正悄悄萌芽。

　　新生代男星须藤莲首部自导自演作品，展现令人惊艳的镜头语言。尾道的怀旧街道与学生情怀，宛如结合了大林宣彦《转校生》飒爽青春与村上春树〈听风的歌〉的浪漫暧昧，更有着三岛由纪夫〈反贞女大学〉、〈不道德教育讲座〉的豪放解脱，辅以大友良英的配乐，营造出甜蜜又禁忌的影像氛围。

It is the middle of summer in Onomichi in the 1970s, and 22-year-old Akira returns home with Yoshioka, his senior at university. Akira offers his parents' house to Yoshioka, whom he likes, and suggests that they spend their summer vacation together. To keep the senior occupied, Akira comes up with the idea of inviting a girl to go out and play. He asks his childhood friend Fumie to find some girls who are bored, and Miko, who has a bit of an unusual personality, joins him, and the four of them start hanging out. Eventually, Yoshioka's eyes on Meeko grow hotter and hotter, which annoys Akira.

夏の尾道市にて三島由紀夫に心酔する青年達の恋愛模様を描く