To cheer up Nana after her divorce, Aoi came to a southern island with Nana. The two were best friends on the volleyball team in their student days, but this was their first trip since getting married. Their old friend Miyako also lives on the island, and the two looked forward to reuniting. They walked along the beautiful beach, forgetting their daily routines and becoming more open. At that moment, they met a local man at the beach volleyball court and decided to challenge him to a game. However, after suffering a crushing defeat and being ridiculed, the two decided to participate in a beach volleyball tournament for revenge…
