In a city of violence and death along with a weak law. Its utter chaos on the streets of "HOME". And so the Equestrain Government makes the decision to send in their best unit to take care of city's problems.

The cutie mark crusaders have gotten hold of three strange mask that seem to represent three different emotions. Happiness, anger and sadness. perfect costumes for nightmare night which is only a few nights away but the mask, something is not right.