Otherworld Trippers, those who came from another world, brought unprecedented prosperity to the Kingdom of Rozenia, using the cheat skills given by the goddess and the scientific knowledge of the earth. However, behind this prosperity, the kingdom was effectively ruled by people from another world, and many of its citizens were sacrificed... In order to change the situation, the first princess of the Kingdom of Rozenia, Ria, visits an isolated island by herself to rely on the real hero who defeated the Demon King in the past. This is the start of a tale of a heroic rehabilitation of the world, in which the treacherous and treacherous otherworldly people with cheat abilities are defeated!