Hometown, a quiet and normal town, if you don't have any problems with monsters, but little do they know that there are two worlds: the Light World, which is the normal world, and the Dark World. No one knows about these worlds except two: Kris and Susie, who travel between worlds to fix the problems, but with the help of Ralsei, who is the prince there, the three participate in a legend: The Legend of Deltarune.

Like a light in the darkness, they save and repair while learning about the prophecy, but what about you? Who will you be? What are you? Will you be part of the Light World or the Dark World? It doesn't matter, because in the end, you will shine amidst all the darkness