Ginta Toramizu is a 14-year-old boy who lacks many advantages: he is nearsighted, performs poorly in school, is bad at sports, and, to make matters worse, he is short! However, Ginta is a dreamer who has experienced the same dream 102 times, always set in the same fantasy world where he is a hero endowed with all the abilities he lacks in real life. One day, a supernatural figure appears at Ginta's school and summons him to a mysterious and exciting new world! In this strange universe filled with magic and wonder, he is strong, tough, agile—and he can see without his glasses! Thus, Ginta embarks on a mystical quest to find the magical items known as "ÄRMS," one of which may have the power to send him home. Joining him on this epic journey are his companion Jack and the valuable living, talking, mustachioed iron-ball weapon known as "Babbo," which everyone wants but, it seems, only Ginta can possess!