Muen is an ordinary person living in the forest who loves fantasy, likes to joke, and often gets into trouble. Through some twists and turns, he was chosen to be the Guardian of the Moon. The inhabitants of the forest depend on the moon for the night, so the role of the moon guardian is very important. But Mun had never been ready to be the guardian of the moon before, so on his first day as the guardian of the moon, he accidentally got into a catastrophe. Although Mun was unintentional, it also indirectly caused The sun was stolen and the moon disappeared. The peaceful world has turned into chaos. In order to save his mistake, the moon guardian Mun had to go to find the sun and the moon together with the sun guardian, the wax girl Syl. It turned out that the black hand behind the scenes had planned to steal the sun away. Only finding out who is behind the stolen sun can restore the world to normal. In order to find the mastermind who stole the sun, the trio embarked on a big adventure