“Satisfyingly intense… keeps the viewer tightly handcuffed.” - Variety

A gritty, edge-of-your-seat thriller filled with powerhouse performances and calculated twists, this multi-award-winning film from filmmaker Daniel Monzón (The Kovak Box) locks you behind its four walls and doesn't let up.

When a riot breaks out in one of Spain's most notorious prisons the inmates take over, led by Bad Ass, the toughest prisoner of them all. Juan, a new prison guard getting a grand tour of facilities, soon finds himself on the wrong side of the fence - and to survive he'll have to convince the jailbirds that he's one of them.

“A jeopardy-laden buddy thriller as two uneasy allies' agendas twist around each other like a DNA helix.” - Screen International