Five transfer students, Park Ji Yoon, Jang Do Yeon, Jae Jae, BIBI, Choi Ye Na, transfer to Saera Girls' High School. Although the school looks rather inviting, something seems a little eerie. They were greeted by the vice-principal and head in to meet with the school's principal, where a suspicious conversion between a police officer finishes up. (Source: Viu)