In 'Whose There?', players assume the role of a private investigator who specializes in missing person cases within a bustling, modern city plagued by an unusual wave of disappearances. Each case leads them deeper into a web of secrets, leading to encounters with eccentric witnesses, shady characters, and perhaps even the supernatural. As players navigate intense decision-making moments and unravel the motives behind the missing individuals, they must also confront their own past traumas, blurring the line between reality and perception. The interactive dialogue system reveals multiple endings, attuned to the choices made throughout their chilling investigation.