Strange things happen in the closed toilets of Eunhee's old school, where she was deputy head girl. Hayeong and Soyeon, who used the place as their hideout, believed there was a ghost there after they heard a humming sound echoing in the toilet, even when no-one else was present. With a plant pot discovered by chance as evidence, Hayeong believes the mystery is linked to Eunhee, and after being accused, Eunhee suffers from visual and auditory hallucinations. She is also convinced that she was called there after seeing female students with injured faces all over her old school.

Duas mulheres presas em uma vida de luxo, segredos e mentiras decidem ser felizes – custe o que custar.

O principal agente de Segurança Nacional, Joo Tae Joo, está subindo rapidamente na hierarquia e não gosta nada de animais. Para obter sua próxima promoção, ele se oferece para assumir uma missão na qual deve proteger um panda chinês especial chamado Ming Ming.

O sucesso dos filhos é tudo o que importa para os membros da elite coreana que vivem em Sky Castle, um exclusivo condomínio de luxo.