The police must deal with several cases of vigilante justice meted out by an elusive female gang - The Red Butterfly. Tensions rise in Ang Huay over talk of a potential successor for their leader, Kway Pek (Richard Low) and one of the faction heads, Dua Jiak (Adam Chen), is eager for advancement. Meanwhile, Seng Hock encourages Yoke Lien to visit an old friend.
