Detective Sing was ordered to investigate a serial murder case. Seven victims had their eyes and lips sewn up with red thread and hung from trees at a construction site.The case caused social shock due to its strange tactics and lack of direct evidence.
Thup, the only witness, claimed to be able to see ghosts, which became the key to solving the case. However, due to his psychic ability and the irrationality of the case, Sing was forced to cooperate even though he doubted his confession.
Sing and his former partner, police detective King, were forced to reunite due to past conflicts. Their professional abilities and personalities were different. Sing was outspoken and irritable, while King was calm and meticulous, which intensified the pressure to solve the case.
Thup's dual identity as “key witness” and “potential suspect” promotes the suspense of the plot, and the “cult sacrifice” clues he provides lead the case in a supernatural direction.
The corpse of a transgender person among the victims pointed to mysterious rituals, suggesting that there may be a cult organization or ancient curse behind the case.
Tupu's “psychic perspective” reveals hidden clues, such as the red line symbolizing the “sealed soul” and the ritual related to the “blood-red heroic spirit” legend.