<b>Life gets pretty boring when you can beat the snot out of any villain with just one punch.</b> <p/>Nothing about Saitama passes the eyeball test when it comes to superheroes from his lifeless expression to his bald head to his unimpressive physique. However this average-looking guy has a not-so-average problem--he just can't seem to find an opponent strong enough to take on! <p/>An emergency summons gathers Class S heroes at headquarters...and Saitama tags along. There they learn that the great seer Shibabawa left the following prophecy: The Earth is in danger! What in the world is going to happen?!