You'll be following Neo, a young idol dissatisfied with her life. After suddenly moving to a new school for one week, she finds herself wrapped up in the school's student council and its (unofficial) idol group.

But all takes an unexpected turn once a simple accident causes our cast to delve deeper into the school's lower floor. During a series of investigations done by the astute Detective Emilia Ruth, your actions will determine the conclusion of the case as well as the story as a whole.