Marco 2024 | Unni Mukundan | Siddique | Jagadish

Victor, a blind man, witnesses the murder of his close friend Wasim. Despite his blindness, Victor identifies the killer by recognising the distinct scent of the killer's perfume and vehicle. Victor's identification leads the cops to suspect that the killer is Russell, who conspired with Wasim's elder brother Tariq, to carry out the murder. Tragically, Victor gets captured by Russell, who throws him into a vat of hydrofluoric acid, resulting in his agonizing death. Victor's brother George Peter, the patriarch of the Adattu family, is devastated by the loss. Marco Jr, Peter's adopted brother who had been sent to Italy for safety, returns after learning about Victor's death. At Victor's memorial service at their local church, Marco vows to avenge Victor's death, declaring his intent to eliminate everyone involved in the heinous act, including Russell, who is present at the scene. Despite Peter's attempts to dissuade him from taking a path of violence, Marco remains resolute. Meanwhile, Tony Issac, Russell's father and the leader of the gold smuggling syndicate, manipulates the situation to his advantage and strikes a deal with Peter involving gold biscuits and a ransom, all while plotting further treachery. During Peter's return from the deal, Isaac's henchman Dev ambushes him in his car, reveals the conspiracy and fatally stabs him. Peter survives, but is hospitalised, further enraging Marco. Peter informs Marco that Tony and Russell were responsible for Victor's death. As Marco sets out for vengeance, Russell reveals his true nature by severely injuring Marco and using a chainsaw to mutilate the arm of Anwar, Marco's right-hand man. An enraged Marco retaliates, killing Russell's goons with the chainsaw. While preparing to kill Russell, Marco learns that Victor's pregnant girlfriend Isha is being held captive by Tony. In exchange for her release, Tony demands the Adattu family's entire gold business operations to be transferred in his name.