Mayor of London is concerned about rampant crime, the cops decided to increase, but in an unusual way. They commissioned scientists have developed a vaccine confers powers over people. The vaccine was discovered, but had a side effect - soon after its application, the person turned into a zombie. After some time, the metropolis turned into a zombie cops power, they began to hunt for the people and eat their brains. The scientist decided to correct a mistake and destroy mutants cops, and you will help him.