One night, Yin, a night shift tunnel toll collector met a young woman (Sze) with self-harm scars, and mistakenly thought that she was heading to the “Suicide Forest”. He rushed to dissuade her, but the two accidentally encountered Sam, an illegal logger. Yin took Sze’s arm and ran away from the forest. This is when Sze realized that there were also scars on Yin’s wrist, and she finally understood what he was trying to tell her before…