To awaken the crown prince who has fallen into an eternal sleep, I will simply hold his hand and sleep. Sonidor is a dream artisan who makes wishes that could not be fulfilled in reality come true in dreams. At the emperor’s special command, she enters the dream of crown prince Marmel, who fell into an eternal sleep. However, there is something strange about the dream of the crown prince, who is known as being kind and gentle. His dreams are an achromatic, desolate world. As Sonidor enters Marmel’s subconscious in the form of a cute animal, she unravels the reasons behind why he fell asleep, one by one… Will she ever be able to wake Marmel up from his eternal sleep?