85 years ago, an Elven ship crashed on the other side of Earth, where mages live, in an entirely different world from modern humans. Grateful for their help, the Elves leave the mages with a prophecy, predicting that they will have a great war in the future, and a hero from a foreign land will help them out. The current king Porus does not believe in the prophecy; despite this, the nobles have forced his hand, and made him perform a summoning ritual.