Halloween was supposed to be simple: get ready, grab your friend, hit the party. Then the mayor turns up dead in a back alley, and simple is off the table. Meet Sunny Summers — moody attitude, all-black wardrobe, zero interest in being a hero. She takes out her moods on her AI companion Cogs, a lovable penguin robot. They are, without question, the worst possible duo to be handed a murder investigation. But sometimes, you don't get to choose your adventure.