All his life, Barkley hated monsters and the miracle workers who control them more than anything else in the world. After all, it was because of them that he became an orphan and was forced to become an apprentice to a mushroom farmer. And when Barkley accidentally wandered too far into the forest, ran into a girl who was a monster, and mistakenly received the mark of a monster, it all looked like his worst nightmare. Now, in order to get rid of the mark (and the monster companion hidden in it - wow, what a horror!) and return to his normal life in his native Zanudshir, Barkley will have to go to the city of miracle workers and take part in a competition that will decide his fate - to be quiet a useless person or a great miracle worker...