Saya Hokage, a high school girl suffering from insomnia, meets Hitsuji Kanburu, who can make anyone fall asleep, as "lovers" in her dreams. In the world of Nightland, which appears when humans sleep, a secret battle continues between sleep beasts that haunt people's hearts and those with the ability to move freely in dreams like sheep. Saya joins that team and begins hunting sleep beasts through cuddling. What will happen to the battles and romances of these girls who traverse between dreams and reality? A yuri SF by the author of 'Otherside Picnic'.