A probation officer, Cathy Madden, is tasked with rehabilitating a notorious killer named ‘Bloody’ Mary Laidlaw back into society following a two-decade sentence.

Packed off to a foster home after her father is insti­tu­tion­al­ized, a rebellious young Irish girl resolves to bust her dad out of the hospital where he’s been confined.

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…