A story of the boy Dumagit who grows up in the jungle with his guardian and animal friends. Dr. Joaquin Olivar and his pregnant wife Marina hide in a remote island after Olivar was accused of a crime and Marina feared being ostracized. Marina dies after giving birth to a baby boy, David. Olivar takes care of the baby on his own and gives him the nickname Dumagit. Later, Olivar is killed by a group of men who came into the island to hunt animals. Twenty years later, Federico Olivar, brother of Joaquin Olivar, comes to the island to look for his brother. This film is the Philippine version of Tarzan.