Singapore. 1955. Crime and chaos threatens to dominate life in Singapore. The Government has no choice but to fight fire with fire. Ex-WW2 veterans turned Police Constables Omar and Yusof are given a high priority assignment to investigate the kidnapping of an Army Officer. Their leads point to a new enigmatic gang vying for dominance in the Triad wars. The duo assemble an unconventional motley crew of constables who must work undercover and remain in the shadows.
In 1955 Singapore, rampant crime reigns. Civilians suffer. At Muru’s Barbershop – ‘Cobra’, leader of 'Snake’ Gang is killed. Suspicion falls on rival 'Dark Horse’ Gang’s head 'Bull'. War hero, Constables Omar and Yusof solve a rich businessman's kidnapping. Detective Chen enters Tropicana, ruled by ‘Dragonfly’ Gang's Lily.
Omar recruits cadet Adam and Yusof's ex Nayla to be a part of Skuad Gerhana. Major Johnson's severed finger is delivered to the police, kidnapper unknown. Lily arranges for Viper to meet Aqsad, The ‘Naga' is revealed. While the Snake Gang mourns the loss of Cobra, an attack launched at the barbershop kills Muru’s son. The Dark Horse Gang is ambushed by the Snake Gang. Bull seeks Lily's help to turn Aqsad against Viper.
Bull's den is raided by Chen; wounded Charlie is saved by Omar. Nayla bugs Bull's hideout while tracking Viper's location. The team plans to bug Viper's office for intel. Viper and Lily plot Bull's demise. Aqsad's motive is revealed, where Johnson is held captive and subjected to torture. Omar intervenes in the clash between Aqsad and Muru. Aqsad tests Omar's loyalty, orders him to make a tough choice to shoot Muru.
Skuad Gerhana debates Omar's leadership amid Aqsad's chaos at barbershop. Bull is cornered by Lily, Viper, Aqsad, Naga. Aqsad kills Bull against Viper's wish, tensions rise. Aqsad tests Omar again and wants Bull's right-hand man gone. A spark of connection occur between Lily and Omar. Yusof's family strain. Johnson's dark side revealed, allies with Aqsad. Friction and tests escalate in gang turmoil.
Viper pushes Aqsad for Johnson's handover, but Aqsad prepares an ambush. Aqsad outsmarts Viper and seizes control. Johnson is coerced to kill Viper and joins Aqsad's plan. Johnson manipulates Captain Rajan at the police station. Omar falls for Lily and loses his focus. Aqsad dominates, undermines Lily. Adam and Nayla work solo while Omar's is lost. A trap ensnares Adam; Nayla and Yusof rush to save him. Aqsad targets Yusof's family, escalating tension.
Yusof mourns his father-in-law, and vows justice for his injured wife. Nayla seeks revenge, Rajan exposes Johnson's plot, and unites the teams. The Flying Squad and Skuad Gerhana unite against 'Naga' at the Tropicana. Chaos erupts, Aqsad escapes with Lily but Omar is wounded. Lily's secret plan surfaces, shifting dynamics and fate using a grieving father's influence to change the course of events.