A/N: So, before I begin, I would like to apologise for any historical inaccuracies and whatnot. So basically, this is set after both movies and the timeframe is set somewhere around 1840s. Well, enough of that, here goes nothing!
After the heart of Te Fiti was finally restored, the darkness plaguing the island of Motunui have finally receded. Moana, daughter of the island chief, came back and received a warm welcome like no other. Together with her fellow inhabitants, they returned to the roots of their ancestors, sailing across the sea in search for islands to inhabit. As time passes, more new islands have been discovered, creating new opportunities for more resources. Meanwhile, instead of just staying still at Motunui, Moana, with permission from her parents, decided to find a new island for her own. Together with several villagers they set sail across the reef in search of a new island.
After weeks sailing across the ocean, they stumbled upon a beautiful island, reminiscent of Motunui, except slightly larger. They headed towards the island to find plenty of resources, such as coconut trees and animals. Mesmerized by the beauty of the island, they settled there, building settlements by using the wood from the trees. Moana, as the leader of this convoy, declared herself the chief of this newly-found island. She named it Waialiki, after her family name.
The island of Waialiki became prosperous and peaceful, with plenty of traders coming from other surrounding islands. They also travelled to other islands, including Motunui, for trading purposes as well. The island remained peaceful and safe under the hands of Moana, with nothing unusual going on.
That is, at least, until 7 years later, when one of the villagers found a human body washed away on the sandy beach of Waialiki.
A human like no other.