On a typical morning, Taichi Nishimura, a regular high school student, and his childhood friend, Rin Azuma, are en route to school. Abruptly, a luminous light envelops them, transporting them to a mystical land teeming with enchanting creatures. As they arrive, a menacing beast immediately threatens Taichi and Rin. In the nick of time, a band of adventurers rushes to their rescue, warning them that being unarmed and inexperienced amplifies the risk of monster attacks. Consequently, they guide Taichi and Rin to the Guild, where they can evaluate their magical aptitude and register as adventurers. However, the test outcome they receive is unprecedented, revealing that Taichi and Rin possess exceptional powers exceeding the standard mage's abilities. Instantly, they transform from ordinary high school students into the ultimate cheat magicians. Taichi and Rin start exploring their newfound abilities and adjust to their new environment. However, while trying to unravel the mystery behind their transportation and find a way back to their original world, unexpected challenges emerge from the shadows.