It was said of Diva: "…if anything ever happened, no matter how big or small, Diva would yelp and run away. Diva was very good at her job." And of Flea: "A great flaneur (someone who roams the streets to see what there is to see) has seen everything, but still looks for more, because there is always more to discover. Flea was a really great flaneur." So, when the two crossed paths, there was hardly anything they held in common, at least at first. Through charming text and illustrations brimming with personality, Mo Willems unfolds a tale of discovery that involves courageously venturing beyond self-imposed boundaries. A feel-good story of trust, growth, and friendship. Diva, a small yet brave dog, and Flea, a curious streetwise cat, develop an unexpected friendship in this unforgettable tale of discovery.

For as long as she could remember, Diva lived at 11 avenue Le Play in Paris, France. For as long as he could remember, Flea also lived in Paris, France--but at no fixed address. When Flea flâneurs past Diva's courtyard one day, their lives are forever changed. Together, Diva and Flea explore and share their very different worlds, as only true friends can do.