Mila, Milo's big sister, has just been handed a key to the whole world. This book prepares young readers for what comes with it. They learn which facts stay offline, why a profile saying "13, loves gaming" may be an adult, and how to recognise the grooming pattern: too nice too fast, flattery, gifts and game credits, then a demand for secrecy, then a request for a photo. Crucially, it also covers the moment after a mistake: don't pay, send nothing more, don't reply, tell an adult straight away, it can be fixed. Screenshot, block and report are framed as superpowers, and phones sleep outside the bedroom, where most tricky chats happen. The book ends with a signable Family Phone Pact built on one promise: honesty is never punished. The parent guide lists warning signs and the practical settings to change tonight.