Algaia is a tale set in a fantastical world, where in the past, dark beings fought to destroy the world. Legends say that the legendary Erellar, beings endowed with miraculous powers, saved the world of Cardealia. And it is in this backdrop that young Algaia, a former mercenary, has everything he loves torn away. He joins forces with a revolutionary named Kanna in a quest to overthrow a corrupt empire. However, to succeed, Algaia must rediscover a way to trust himself and access his powers.