High school student Mio lives in Kagoshima. Since her novelist father was lost, she has refused to go to school and lived on her father's yacht, which is anchored at a dock. Kiyomi likes yachting, because of her father's influence back in her childhood days. During a practicing yachting, Kiyomi lost her friend and she also quit her special yachting school. Kiyomi then transfers to a regular high school. Finally, these two girls meet.