Five years ago, he saw his superior being killed with his own eyes.
Five years later, he returns to find the man who betrayed them.
The police are chasing him, the underworld is killing him, and all his comrades want his life.
He had only one way - to go into the dark alley and find the ghost.
But at the end of his investigation, he found out——
That ghost is the person he trusts most.
