The former tennis club of Sakura Junior High gather together at the class reunion party on New Years Eve. They're in their twenties now, and Mizuho is excited to finally get to see Tatsuya again, her long-time secret love. Then they have a plan to have a trip to a ski-resort and stays at Mizuho's mom lodge. The fun and adventure starts when the girls are taking a bath in hot spring and the boys are peeping but they caught by the girls. Will the romance blossom again between them as they rekindle their past emotions?