In 1947, an aging Sherlock Holmes returns from a journey to Japan, where, in search of a rare plant with powerful restorative qualities, he has witnessed the devastation of nuclear warfare. Now, in his remote seaside farmhouse, Holmes faces the end of his days, with only the company of his housekeeper and her young son, Roger. Grappling with the diminishing powers of his mind, Holmes comes to rely upon the boy as he revisits the circumstances of the...

The detectives are on a mission to uncover the mystery behind an unsolved murder that occurred 39 years ago. Beneath the ground of a demolished house, the bones of the victim are found. With this evidence, the modern police team opens a case to unearth the history that has remained buried for decades. Four main suspects emerge, and as their dark past is unraveled, the truth behind the events of the crime is finally revealed.