As tiredness overwhelms the populace, stressed folk begin succumbing to the pressure and metamorphose into fatigue monsters. But fret not! For the magic wielding people are here to beat them up and revert 'em back to people. Being able to withstand fatigue, these bright, courageous and optimistic youth will save the day! Deri is an overworked, weary and pessimistic man working as an accountant at a marketing agency specialized in magic users. Despite his time being mostly relagated to work and some to his family, Deri is content with how things are. One day though by pure coincidence, he stumbles upon an eccentric black cat calling himself Vesdraity claiming to be a magic mascot. As surprise to both of them, Deri is able to use magic. Before long, Deri is dragged into the world of magic and monsters. With a loose of a tie, a weary smile and a bit of insanity, businesses folks are here to save the day!