A psychiatrist disappeared after being accused of murder, but the police discovered that there was another mysterious person behind the scenes. Is he helping to abscond, or is he causing trouble? A seemingly unexpected and bizarre car accident reveals the mystery of the mountain disaster three years ago, or a premeditated murder...
A female corpse is discovered after a rainy night. The strange fragrance and lingering swallowtail butterflies are surprisingly similar to the crime scene ten years ago. Did someone commit the crime again, or was it just a coincidence? An old case is brought up again, but someone is raising suspicions, pointing out that there is another hidden story in the case...
The pawns cross the river to kill the general. The game has entered the endgame. Who can win the final victory?