Landing on a remote island early in the morning, WAI-SUM leads his teammates scouting around for clues. Simultaneously, SIU-LEUNG traces severely injured SAPURA to an abandoned house, where he comes across YIU-TUNG, who is on a mission. Ahead of their encounter, YIU-TUNG has learnt from SAPURA about the buried past. Desperate to keep KIU brothers' secret, SIU-LEUNG abruptly strikes at YIU-TUNG. In addition, having analyzed the current situation upon reporting to KIU brothers, he plans to sacrifice himself if necessary. Taking into account that KONG-SHAN's late wife was SAPURA's old flame, POON Sir specifically urges each team member to keep an eye on KONG-SHAN. Following the death of SAPURA, KONG-SHAN is summoned to help the police with their inquiries, during which he successfully counters all the questions raised by WAI-SUM……