A fun and clever cautionary tale for young readers by talented French author/illustrator Philippe Jalbert. Using a sequence of escalating events a mother warns a young girl what could occur if she touches a butterfly (hence introducing the chaos theory of the butterfly effect in an age-appropriate STEM-friendly way).

This picture book will delight the very young who enjoy suspense and allow children to explore the question they love to ask "and then what happens?" with increasingly dramatic effect.