Mary Richards is a normal sixteen-year-old girl living in Manhattan. Well, almost normal. She goes to private school on the Upper East Side, having been saved from a life of squalor by an adoptive family. But she's also slowly transforming into a cat. Struggling to hide her physical metamorphosis, Mary discovers that she isn't alone. A whole race of cat people prowls the streets of Manhattan at night, including Mary's long-time crush, Nick. Aside from heightened feline senses, hanging out with Nick is the best thing about discovering her inner kitty. But Mary's transformation is special and could decide the outcome of a citywide turf war. She must decide whether to embrace her powerful feline side and become a pack leader or go back to being a normal teenage girl. Can she land on her feet or will curiosity be her downfall?