Okay kiddo, so imagine you're playing outside and you accidentally get hurt really bad, or there's a big emergency like a fire or someone is trying to hurt you. You need to get help right away, but you don't know who to call. That's where the number 111 comes in! It's a special phone number you can call on any phone, even if it's not yours, and it connects you to people who are trained to help you in an emergency.
When you call 111, someone will answer the phone and ask you what the problem is. You just need to tell them the best you can, even if it's hard or scary to talk about. They might ask you some questions to figure out how bad the emergency is and what kind of help you need. They'll also ask for your name and address so they can send someone to help you as fast as possible.
Sometimes, they might tell you what to do while you wait for help to arrive. For example, if there's a fire, they might tell you to get out of the house and stay far away from it until the firefighters get there. Or if someone is hurt really bad, they might tell you how to take care of them until an ambulance comes.
It's important to remember that you should only call 111 in a real emergency. If you accidentally call them by mistake, don't hang up – just tell them it was an accident and you're okay. And always remember to listen carefully to what they tell you to do, because they're there to help you and keep you safe.