Yoichi receives an invitation from Ajio to a villa on the island. However, waiting for him on the island are Ajio and his friends, who are confused because they were invited by Yoichi. Who could have orchestrated this? A man soon appears, introducing himself as Ajifune Toshiya, a chef of the sea, and challenges Yoichi to a grilled fish contest on the rough sea. What's more, he claims to be the man who once defeated Yoichi's father, Takao.
陽一の下に味皇から島の別荘への招待状が届くが、島で待っていたのは陽一に呼ばれたという困惑した味皇たちだった。やがて現れた男は海の張飛と名乗り、陽一に焼き魚での荒磯勝負を挑んでくる。