No Case Should Remain Unsolved

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Summary

Twelve years after Senior Inspector Jeon Gyeong stepped down, she is approached by a young female officer begging her to revisit the Seowon case. Yet as each hidden memory resurfaces, one truth becomes undeniable—everyone close to Seowon was deceiving.

Storyline

February 5, 2012. A young girl named Seowon goes missing from a playground. Authorities begin an investigation, interviewing witnesses and suspects, but the case remains unsolved. Twelve years after Senior Inspector Jeon Gyeong's retirement, she is approached by a young officer—a woman who begs her to revisit the mystery of Seowon's disappearance. Yet as each hidden memory resurfaces, one truth becomes undeniable: every person close to Seowon was lying.