Nimbus had a rough start as a kitten. But her fortunes changed the day she met Fletcher. The boy nursed her back to health from a life-threatening injury and adopted her. But when Fletcher's aunt brings home a mysterious jar, an ancient demon is unwittingly unleashed. Despite battling the monster to save her friend, Fletcher's superstitious aunt blames Nim for the attack and secretly abandons her at a dump. There, Nim is befriended by a theater-loving rat and taken in by a kindly witch named Agatha and her motley crew of...