One ordinary morning, regular high school student Taichi Nishimura and his childhood friend, Rin Azuma, are heading to school when a glowing light suddenly envelops them, transporting them to a fantasy world teeming with magical creatures. Upon arrival, the pair is threatened by a beast but is promptly rescued by a group of adventurers. These adventurers warn Taichi and Rin that traveling unarmed and inexperienced leaves them vulnerable to the recently escalating monster attacks. They are directed to the Guild to assess their magical aptitude and register as adventurers. However, the test yields an unprecedented result: Taichi and Rin possess extraordinary powers that far exceed those of a standard mage, instantly transforming them from typical high school students into ultimate cheat magicians. Taichi and Rin begin to grasp the full extent of their powers and familiarize themselves with their new world. Yet, as the duo seeks to uncover the reason for their transportation and a possible way back to their original world, unexpected trouble lurks in the shadows.