Who Is The Murderer? is a puzzle game with a Chinese-style plot that is set in the year 1927 in the small town of Jiangnan. The game's storyline follows a young master who discovers that his father's death was not a simple incident. As he searches for the truth, he comes across unfamiliar places and encounters a mysterious woman. The investigation intensifies, and he uncovers long-hidden family secrets. The game's narrative is reminiscent of a murder mystery, requiring players to identify the culprit and unravel the events that led to the crime.