An elite crew of Italian thieves targets the vault of the Antwerp World Diamond Centre. After 27 months of planning, they execute their ambitious and intricate plan and make off with more than $100 million in diamonds, gems, and cash.

Enterprising thieves tunnel underneath and up into the vault of a Lloyds Bank branch in London; when an amateur radio enthusiast intercepts their walkie-talkie chatter, they find themselves in a high-stakes cat-and-mouse game with Scotland Yard.