Haruka arrives at her grandmother's house and she is in awe at the beautiful ocean that lies before her. She runs towards the beach and runs into two girls playing beach volleyball.
Haruka promises Narumi and Ayasa that she'd play with them again without giving it much thought, but they happen to be the national champions. Haruka starts training with Kanata, who plays beach volleyball herself, for the rematch that's in a week.
Haruka encounters the twins, Claire and Emily at the school she's about to transfer to. Haruka learns that they're trying to gather members for the beach volleyball club and she instantly wants to join. Kanata also joins, but...
Haruka and the others enter a volleyball tournament. To prepare for the tournament, they all practice hard but Haruka feels like she wants to catch up to Kanata. Because of that, she starts training with Claire and keeps it a secret from Kanata.
The beach volleyball tournament has begun. Haruka and Kanata's first opponents are Ai and Mai, who they fought over the swimsuits with. Haruka is out for revenge, but Ai and Mai have their own reasons for wanting to win.
Haruka and Kanata win the first set, but have a much harder time with the second set. Claire and Emily won their first match quickly and watch Haruka and Kanata play along with Sora. Haruka tries blocking multiple times, but.
Claire and Emily's mother, Marissa, is a professional coach and starts to coach the girls. After going through Marissa's hardcore training, Haruka and Kanata reevaluate what the most important thing about being a pair is.
It turns out that there will only be one team from Okinawa going to the nationals, so it will probably come down to Claire and Emily or Haruka and Kanata. Akari finds this out early and has a hard time telling the others.
The Okinawa qualifier finals begin with Haruka and Kanata playing against Claire and Emily. Claire and Emily clearly take the lead, but Emily remembers back to when she would let her sister do all the attacking.
They are now in the second set of the finals. Claire sees Kanata's eyes and remembers losing to her and Narumi in the junior tournament years ago. The strength Kanata had back then was back in her eyes.
