On a secluded island, a cutting‑edge research complex shelters the reclusive prodigy Shiki Magata, who has spent years in isolation. Few visitors arrive; yet associate professor Souhei Saikawa and student Moe Nishinosono pursue her. Their encounter is abruptly interrupted by a baffling locked‑room homicide.
A web of deception unfolds as hidden motives surface. The isolated laboratory conceals a crime that defies logic, forcing Saikawa and Moe to investigate the sinister act while uncovering Magata's concealed history and the secrets that bind them together to a dangerous truth that threatens everyone and the future.