It's the cold winter in Ponyville again.

The peaceful landscape is disrupted by a bloodcurdling cry. Soon afterwards, Detective Summer Blossom is called in to investigate what seems at first glance a simple gun shot. But soon, the same killer strikes again, leaving a trail of death behind.

Now Summer must answer the questions, Who's next? And why?

As the case unravels, she realises that order and law are never hand in hand, and that sometimes, its the silent guy who makes the difference.