Synopsis

Hattori Kaito (Mori Shoot) spends his summer enjoying the beach with close friends Akiyama Roki (Konishi Eito), Sagara Yuto (Sunada Masahiro), Kamo Mirai (Koizumi Kosaku), and Sakurai Haruto (Nagano Sora), while helping out at a seaside hut run by Roki’s father.
Amid their carefree days by the ocean, an unexpected turn of events leads them to join a lifeguard training organization known as the “Water Guardians Club.” There, they undergo intense training under instructor Yuminaga Riko, alongside Ueno Soma (Tsubaki Taiga), who develops a fierce rivalry with Kaito.
 
The ocean! Friendship! Romance! A super-charged youth summer movie that will make this the hottest summer ever!