Set in a typical yet mysterious school… where the pupils are drawn into a sweet yet mysterious spell in which their dreams come true the moment they dream them. Sang Woo is in her second year of sixth form; she has a strong sense of justice and is very curious. Her best friend is Ye Rim, who is the class representative. Ye Rim seems perfect in every way, with her attractive appearance and top marks. Once she realises that something strange is going on, she springs into action to uncover the mysteries of her school; ever since… a mysterious, nightmarish teacher, Han Bong Gu, arrived at their school, and it seems that strange events have been occurring there ever since his arrival.