Narumi Seo carries a fractured memory, pieces of his past scattered like broken glass. Working alongside a team of gifted investigators at the Seo Research Laboratory, he pursues cases that others cannot solve, yet the answers he seeks about himself remain just beyond reach. When a new mystery surfaces, it pulls him deeper into a psychological labyrinth where his condition becomes both liability and asset. The line between what he remembers and what he imagines blurs as the investigation progresses. His colleagues must navigate the tension between trusting his instincts and questioning his reliability. What emerges is a portrait of a man trying to piece together identity while chasing truth, confronting how memory shapes who we are. This single episode balances intimate character study with the puzzle-solving intensity of a crime thriller. The atmosphere grows increasingly claustrophobic as external mystery and internal fragmentation converge. Viewers drawn to psychological depth and unreliable perspectives will find something haunting here, a story about reconstruction and the spaces where certainty collapses.