Okay, kiddo, so 2 Samuel 11 is a story in the Bible about a man named King David. David was a king of a place called Israel a long, long time ago.
One day, David saw a woman named Bathsheba taking a bath on her rooftop, and he thought she was very pretty. David decided he wanted to be with her, even though she was already married to someone else.
So, David sent Bathsheba's husband, named Uriah, to a war so he could be away from Bathsheba for a while. While Uriah was gone, David and Bathsheba got together and she became pregnant.
David didn't want anyone to know that he did something wrong by taking another man's wife, so he came up with a plan to make it look like Uriah was the father of the baby. David ordered Uriah to be put in the front lines of the war, where it was very dangerous, and Uriah was killed.
God was not happy with David for what he did, and sent a prophet to tell David that what he did was wrong. David was very sorry and asked God for forgiveness.
So, the story is about a king who did something bad by taking another man's wife and then trying to cover it up by making Uriah go to a dangerous war. But in the end, David realized it was wrong and asked God for forgiveness.