This deceptively simple concept book introduces readers to grumpy, old, exhausted Cat, who just wants to be left alone, and to happy, new, energetic Kitty, who longs to make friends. In a story told entirely through well-chosen pairs of opposites and drolly expressive artwork, author-illustrator Mirka Hokkanen manages to elevate the humble concept book into a true work of art--one that is bound to have readers giggling and crying for more!