Asuna and her little sister Frisk are as happy as can be, you've just been adopted by two loving parents! But when a little exploring mishap results in both taking a tumbling into the underground, Asuna will protect Frisk with her life. Also while trying to keep her powers a secret, that she is a magician, and that she practices magic. They find their way through some strangely deserted Ruins, the only question being, why does Frisk look like they have done this a million times before? Why are the Ruins deserted? And will they be able to make it back to the surface alive?