Hiroshige Akihisa works for a karaoke company. When he is interviewed about the past 30 years of the Japanese music industry, he gets confused when he is asked about his high school student days. An incident that happened 29 years ago caused him to suppress his memories, which have now come back.

On March 20, 1995, the Tokyo subway sarin attack took place. At that time, Akihisa was a high school student who got good grades and was well-mannered, but the Tokyo subway sarin attack led him to face the death of someone he knew and shook his world. Around that time, he was suddenly called out by his classmate Suzuki Shotaro, whom he wasn't very close to. Shotaro asked him if he wanted to live vacantly into his adulthood and then die. Would he be happy living that type of life? Akihisa then joined Shotaro’s group and hung out with them in Shibuya. One day, Shotaro is attacked by someone. Akihisa decides to take revenge on the attacker and begins to search for him.

「日本の音楽産業の30年」について取材を受けていたカラオケ会社に勤める広重秋久は、高校時代の話を聞かれ戸惑っていた。自分の人生を変えた29年前の”あの事件“…これまで蓋をしていたあの頃の記憶が鮮明に蘇っていく。

1995年3月20日、成績優秀で品行方正な高校生だった秋久（髙橋海人）は、地下鉄サリン事件をきっかけに人の死に直面し、動揺する。世界は本当に終わってしまうのか。言いようのない感情を抱え、持て余していたときに、これまで話したことのなかった同級生・鈴木翔太郎に突然呼び出される。「ぼんやり大人になって、ぼんやり死んで、お前は満足なんだな？」悶々とした気持ちを焚き付けられ、強制的にチーム（仲間）に誘われる。これは、混沌と狂熱が入り混じった1995年を、時には道を踏み外しながら心の赴くままに駆け巡った少年たちのアツい青春ストーリー！