The Kingdom of Heinburg where even the way of life is determined by the skills given. Cyclo-Owen, who had a promising future as a magic tool engineer, was bestowed with the "ceremony of granting skills" to make and repair clocks. After being banished from the Artisan Guild and falsely accused of being a criminal slave, he was sent to the unexplored dungeon "Deep Hole". Even there, he was treated as incompetent and pushed to the bottom of the dungeon. When he vowed to take revenge on this world, the true power of the "Clock User" awakens...