A legendary modern martial arts city action begins. Ha-je is contemplating death on the roof due to bullying. A senior named Siwoon appears in front of him and drops the laxative down at once?! However, it was the school health room that woke up safely. Ha-je’s counterattack ends in failure as the bullying begins again… But Si-woon reappears in front of him and coaches Ha-je, knocking them down with one blow with Ha-je’s fist. Now, the existence of Moorim under the eyelids of the school, which was thought to be ordinary, is revealed, and a difficult adventure into the world of Moorim begins.