In the sequel to Grander Musashi, Musashi Kazama, a skilled young fisherman, embarks on a global journey with his two companions to locate seven extraordinary objects known as 'Legenders', shaped like fish and possessing immense power. These mystical artifacts are believed to bestow the ability to reshape the world on their captors. However, Musashi finds himself in fierce competition with other determined fishermen who also seek to claim a Legender for themselves.