When a former Special Ops commando visits Pompeii, his wife and daughter are trapped as Mt. Vesuvius erupts with massive force. While his family fights to survive the deadly onslaught of heat and lava, he enlists his former teammates in a daring operation beneath the ruins of the city of Pompeii.

With nowhere else to hide, a group of mercenaries and their prisoners take cover inside a long abandoned Bulldog tank. But, while they try to keep the forces outside at bay, the real enemy is already among them, locked inside the ‘Belly of the Bulldog’. After collaborating closely with Ben Wheatley on FREE FIRE, HIGH-RISE, A FIELD IN ENGLAND and KILL LIST, director Nick Gillespie makes his feature debut.