Big Little Crimes tells the remarkable stories of ordinary beat coppers who stumble upon a key piece of evidence — a haul of stolen goods or a suspect on the run — and bring a major criminal to justice. A group of youths smoking cannabis leads police to solve a string of terrifying robberies. A call to a disturbance ends up with officers discovering a massive haul of firearms, and a dodgy truck registration leads to police cracking a major international smuggling operation.