Takuaka is a reef guardian and he goes off and battles other reef guardians
He wins all his battles he can turn into a shark so he can travel to islands faster
He meets an old friend and he tells him that there is a brave reef guard
So takuaka went to his island and sees a octopus and it beats him and takuaka cries to the octopus and begs him to let him go . so the octopus let him go and the shark didn't attract anyone anymore