Koyan, the Origami Ninja, traveled to Earth from his home planet, Origamio, in search of the magical stone "Hapiton," which possesses the power to bring happiness to people. Along the journey, he was accompanied by his childhood friend Namin and a new companion, Lublin. One day, a villain named Evilrun emerged. Evilrun has a black hole in her stomach and attempts to inhale everything. Whenever an event occurs, Evilrun interferes with Koyan and his friends. However, Evilrun's true objective remains a mystery...