The characters are Mako who spends his time in the lagoon, Afa who is a dog and his best friend, And there is tupa the towns enemy.
Grandfather tells Mako the story of the ghost of the lagoon. Then he told him that tupa, the towns enemy killed his father. So Mako is determined to get Tupa back.
The next morning Makos mom told him to get more bananas. He had to canoe there. He saw coral that looked like a shark, but it wasn't, so he practiced with his spear. Mako yelled " I am coming for you tomorrow!'
Tupa approached the canoe carefully. Mako saw the shadow of Tupa, and started to get nervous. Afa, his dog fell in the lagoon and Mako has to decide if he will risk his life to save Afa.
Mako killed and ties Tupa up and brings him back to the village.
The villagers are proud of Mako, and know that Tupa won't kill other people. Mako earned land and a canoe as his reward.