In order to assassinate the mysterious principal of Superman High School, Jack of Hearts, disguised as Jack Chen, an ordinary human exchange student, infiltrates into... more>> the isolated Superman High School. He is accidentally assigned to Class F, the worst class. A group of problematic students with powerful superpowers make our strongest killer Jack of Hearts suffer a lot. Every single day is a frenzy and a life-threatening routine and the plan to assassinate the principal seems to be out of reach. <<less