In a world that is quite peaceful and there are no threats that can endanger the world and everything in it. However, a hero appears from another world who is summoned to this world for unclear reasons. The hero begins his actions that are incomprehensible to the people of this world, such as going to a remote place, hunting all the monsters and many other things. Enzuu is an adventurer from his world and his three party friends see the hero's strange actions. Enzuu began to ask questions, why was the hero actually summoned to his world where there were no threats? Until Enzuu and his three colleagues discovered something very strange was happening and that was the starting point for a very big change to occur in their world.