Bullet Head (also known as Unchained) is a 2017 American-Bulgarian crime thriller film written and directed by Paul Solet and starring Adrien Brody, Antonio Banderas, and John Malkovich. Plot Interspersed flashbacks occur of a Perro de Presa Canario, a large mastiff, from a dog fighting ring, as well as his owner Blue, who has abused the dog in order to make it fight. Despite growing large and taking on multiple canine opponents within single matches, the dog has become injured, and Blue instructs the handler to put him down. Following a botched robbery, the getaway driver of a four-man crew was presumably shot as there are three bullet holes shown in the driver's side window. The getaway car is shown out-of-control and then crashing into an abandoned warehouse, with the driver shown dead, his head resting on the steering wheel. The other three criminals, Stacy, Walker, and Gage take refuge in the warehouse. Stacy contacts another driver, but they won't be picked up until the heat dies down the next day. While Stacy and Walker discuss cracking a stolen safe, Gage is in opiate withdrawal and desperate to shoot up. Gage is revealed to have messed up the robbery when he left his post to steal drugs from a pharmacy. As they wait for morning, Stacy thinks of his girlfriend Grace who had left him years before, but asked him to join her. Stacy is hesitant to leave a life of crime. Walker tells Stacy a story from when he was younger; a failed burglary led him to stealing a number of fish from a pet store as a gift for his daughter. However, all the freshwater fish died in the saltwater, but the saltwater fish survived. Inside a locker room, Gage finds drugs, medical supplies, and testosterone. He then finds the dead body of the dog's handler, and the monster dog itself standing over the corpse. The dog pursues the three men but they are able to trap it in the locker room. Gage drops his bag containing opiate pharmaceuticals on the way out. A police dog handler arrives on the scene to search the vacant building, followed by squad car with another two officers. The mastiff sneaks up on the officer, but does not attack him when the officer shows affection to his K9 dog. The police leave without detecting the criminals. Stacy and Walker share their opinion