The story follows Mune, a troublemaking nobody who, by a twist of fate, becomes the important Guardian of the Moon. On his very first day on the job, he makes a grave mistake that indirectly leads to the theft of the sun, the disappearance of the moon, and throws the world into chaos. Thus, he is forced to team up with the Guardian of the Sun and a wax girl named Sohone to embark on a grand adventure. Together, they must uncover the mastermind behind the chaos and save the world.