Before going to sleep, a curious girl asks her dad why the sea is blue, why the trees lose their leaves in the autumn, why, why ... Her dad, undaunted, will give her the most charming answers and fantastic, populated by space dinosaurs, singing fish and messenger birds ... Finally it is time to sleep and dream of all the fantastic beings of your sweet conversation. This clever album book plays with a child's curiosity and a dad's witty responses. The illustration is perfect for fueling this pretend play, and shows that there are different types of valid answers. It will undoubtedly become a classic book to read before bed.