"The Secret of the Grand Mansion: The Missing Girls" features ten members of WJSN - Seola, EXY, Bona, Soobin, Luda, Dawon, Eunseo, Yeoreum, Dayoung, and Yeonjung - seen drifting on an empty planet after an inexplicable horror derailed their travel to an awards ceremony. With the girls finding the Grand Mansion, the story begins as their curiosity is piqued with traces of someone in the mansion.
엑시
as EXY
Seola
as Seola
보나
as Bona
수빈
as Soobin
루다
as Luda
Dawon
as Dawon
손주연
as Eunseo
여름
as Yeoreum
Dayoung
as Dayoung
유연정
as Yeonjung
