Four Jack-the-lads find themselves heavily - seriously heavily - in debt to an East End hard man and his enforcers after a crooked card game. Overhearing their neighbours in the next flat plotting to hold up a group of out-of-their-depth drug growers, our heroes decide to stitch up the robbers in turn. In a way the confusion really starts when a pair of antique double-barrelled shotguns go missing in a completely different scam.
Eddy persuades his three pals to pool money for a vital poker game against a powerful local mobster, Hatchet Harry. Eddy loses, after which Harry gives him a week to pay back 500,000 pounds.