Gabriel lost his 2-year-old son, Jacob, in an accident brought by his job as a police officer. It also placed him in a coma for 5 years. Upon awakening, He went back to service and started searching for his son, whom he knew in his gut was still alive. Jacob drifted to a mysterious Island of Noah, where a group of old looking apes called Unta dwell. They took care of Jacob and renamed him Eli. There, Gabriel searches for his son and comes across him but now his son finds him part of the Unta tribe. He was unable to convince Eli that he is in fact his son, Gabriel joins him in his quest and bonds them together. But little did Gabriel knew that his son's quest is actually his own and that whatever will be the outcome of this quest will determine the fate of the outside world.
—MyDramaList