伝説のシェイパー、タダオの家に下宿し、湘南でサーフィン漬けの充実した高校生活を送るマサキ。あるとき、マサキはささいなことの積み重ねで、コウスケを怒らせてしまう。憤懣やるかたないコウスケはマサキに勝負を挑む……。
Masaki is living a regular high school life in Shonan while staying at the home of legendary board shaper Tadao. In the early mornings, he goes out to ride the waves with Kosuke and Yuta. Then, he goes to school. After classes, he goes back to the beach. Day after day, he lives a life of contentment, immersed in surfing. Amidst all of this, little things that Masaki does pile up, angering Kosuke. Unable to let go of his indignation, Kosuke challenges Masaki to a surfing match...
Masaki começa sua vida nova em Shonan, mas o mar de lá parece não ter ondas muito grandes, o que o deixa desmotivado. Essa desmotivação, desleixo com os estudos e atrasos frequentes fazem com que o Kosuke se irrite com o novo colega de colégio.
Masaki a donc rejoint Yûta et Kôsuke à Shônan et étudie dans le même lycée, tout en étant logé chez un célèbre shaper de planches de surf, Tadao. Vu le peu de vagues par rapport à sa ville natale, Masaki a tendance à se laisser aller, ce qui a le don d'agacer Kôsuke.
Masaki tritt bei Kosuke in ein Fettnäpfchen nach dem anderen. Als er schließlich Tadao-san um ein Surfbrett bittet, platzt Kosuke der Kragen.
