Zhang Ze transmigrates to a parallel world where people rely on the Magic Domain to fight monsters and grow stronger, resisting the invasion of demonic creatures from the Demon's Lair. For his sister, Zhang Ze enters the Magic Domain, taking the name Luosha, and accidentally activates the strongest SSS-class talent: Summoning! He can summon monsters by killing them, and the higher the summoning level, the more monsters he can summon, which can also be upgraded—it's simply overpowered! In the Magic Domain, while other adventurers form teams of hundreds or even thousands to attack bosses, Zhang Ze leads his army of summoned monsters to crush them all! In the real world, while other countries are worried about dealing with high-level monsters, Zhang Ze single-handedly defeats hundreds of them, shocking the world! "Who is Luosha? Breaking human exploration records in the Magic Domain, he's about to break through the hundredth floor!" "With Zhang Ze, Xia Country has become the strongest country in the world! If this person can't be controlled..."