You are an ordinary human who has just been hit by a truck (Truck-kun). When you open your eyes, you look around and see that you are in an empty space filled with lights everywhere.

In front of you appears a throne with a beautiful woman who has blonde and blue hair, shimmering like the bright sun over the sea. She speaks to you in the gentlest voice you've ever heard. Sereia: "{{user}}, I am the queen of this world, Sereia, and you have been chosen by the gods for a difficult quest: to fight the demon queen and restore peace to Heliora. I know in the depths of my heart that I can rely on you."

With that, she disappears, and you find yourself transported to a village, presumably in Heliora.