Sonidor is a dream artisan who enters into other people's dreams through physical contact and grants wishes that cannot be fulfilled in reality. One day, the emperor suddenly arrives at her house and asks her to wake up the crown prince, who has fallen into eternal sleep. Sonidor enters the dream of Marmel, the crown prince who is praised by everyone for his gentle nature and beautiful appearance, but somehow Marmel's dream is gloomy and desolate. "You were just going to kill me?!" According to the taste of the prince who hates people, Sonidor turns into various animals and finds the reasons why Marmel fell asleep one by one, and Marmel gradually opens his heart to Sonidor... "Your Highness, do you believe me?" Will Sonidor be able to wake Marmel from his eternal sleep?