The year is 1716, the oceans are infested with the demons of the sea known as 'pirates'. They pillage and plunder but roam as free men from the crown. But in these waters of thievery and treasure, a great number of evils run unchecked. Monsters, Demons and all manner of creepy creatures roam the sea. Somebody has to do something about it, right?

A Gardevoir, nicknamed Yami by his trainer, lost his powers protecting a friend. Abandoned and forgotten, the void left behind by his psychic powers led to scientific intrigue, making him the target of horrific experiments. Travelling Kalos he must learn to control his new powers and track down the men responsible, while making friends and fighting battles along the way.