Four original heroes were transferred to a parallel world, but at the same time, a guy who did not even think that this would happen to him is transferred to the country of Melromark. He is immediately made a slave as a person unknown to no one. Torture, pain and strength, that's what he got in this world. In the end, he decides to become a hero who will stop this mockery of other nations, he will become a savior for them, while trying to stop the strange waves that harm this world.