One night, Mako's grandfather tells him of a creature that inhabits the lagoon near the village. This creature, Tupa, has frightened the villagers for many years. King Opu Nui has offered a reward for Tupa’s capture.
CLIMAX
Mako’s mother believes it is time for Mako to learn the truth. His father was one of the fishermen who was killed by the shark, Tupa. He vows to kill the shark to avenge his father and to claim the reward.
FALLING ACTION
Mako's mother sends him on an errand. Mako and his dog, Afa, travel to a nearby island to pick some bananas and oranges. Mako imagines the reef as a great white shark, and dreams of defeating Tupa.
RESOLUTION
Mako sees Tupa’s dorsal fin circling the canoe. Afa falls into the water and is in danger! Mako kills the shark with his spear.
Mako ties the shark's tail to the boat and tows it behind him. He brings the shark back home.
The villagers are thrilled that Mako has defeated Tupa. Mako will be awarded thirty acres of land and a canoe after a celebration feast the next day.