配送バイトの草薙航基（宮下草薙）と坪根悠仁は、側溝に落ちた少年を発見。男の子の顔には側溝の水流が直撃していて苦しそう。2人は救出しようとするが、少年の体の上に激しい水流が流れ込むことによって強い水圧がかかっているため簡単に持ち上げられない。草薙の信じられないようなミスで消防隊に連絡ができない状況の中、少年の体力は消耗する一方。早く助けないと命を落としかねないが、果たしてこのピンチを切り抜ける奇跡の突破法はあるのか？
Kusanagi Koki (Miyashita Kusanagi), who works part-time as a delivery man, and Tsubone Yuujin find a boy who has fallen into a gutter. The boy's face has been hit directly by the water from the gutter and he appears to be in pain. The two try to rescue him, but the strong water pressure caused by the strong current of water flowing over his body makes it difficult to lift him up. Due to an unbelievable mistake by Kusanagi, they are unable to contact the fire brigade, and the boy's strength is steadily declining. If they don't save him quickly, he could lose his life, but is there a miraculous way to get out of this predicament?
