In mid-19th century Victorian England, master thief Edward Pierce devises an ambitious plan to steal a fortune in gold bullion being transported by train to the Crimean War. To pull off the heist, Pierce assembles a skilled team, including clean-cut burglar Robert Agar, elegant confidante Miriam, and reformed pickpocket Barlow. Pierce's meticulously crafted scheme involves acquiring four separate keys that open the train's secure cargo vault, each one under heavy guard and held in different locations. Disguises, seduction, and intricate planning are essential as they deceive and outwit bank officials and railway guards to gain access to the keys.

As the date of the daring robbery approaches, tensions rise and the intricate web of deception becomes increasingly complex. With the authorities starting to suspect their plans, Pierce and his team must navigate through betrayal, unexpected obstacles, and dangerous close calls without arousing further suspicion. The heist requires precision timing and nerves of steel as they execute their audacious plan while racing against time. Will they successfully carry off one of history’s most daring thefts, or will their plot be derailed by unforeseen challenges?