Ozora Haruka (voiced by Kana Yuuki) is a lively and cheerful girl, but she often lacks confidence because she is too tall and stands out in the crowd. She originally lived in Tokyo and came to Okinawa, which is close to the sea and sunny, and entered the high school there. In Okinawa, Haruka reunited with her cousin Higa Higata (voiced by Saki Miyashita). Under Higata's influence, Haruka began to play beach volleyball. Her height, which made Haruka feel inferior, became her advantage in this sport. Through this sport, Haruka met a group of like-minded friends, including Akai (voiced by Atsumi Tanezaki), who is carefree and informal, and Emiri (voiced by Rie Suehara), who is very serious and strict in everything. On the golden beach and the blue sea, the girls are sweating to their heart's content.