Once upon a time, people went to the moon, which is very far away from Earth. When they were there, they collected rocks, like you do at the beach or the park. These were very special rocks because they came from the moon, and not many people have been there to get them.
A long time ago, some of these moon rocks went missing. Nobody knows for sure where they went or how they disappeared, but people have been trying to find them ever since.
Moon rocks are very precious, like jewels or money, because they are so rare and unique. People want to study them to learn more about the moon, the Earth, and the universe. They also want to see if they can find any clues about life on other planets.
Unfortunately, some people are not very nice and they like to steal things that don't belong to them. Maybe someone stole the moon rocks because they wanted to sell them for a lot of money, or maybe they just wanted to keep them for themselves.
The people who study the moon rocks are very sad that they are missing, but they have not given up hope. Maybe one day, someone will find them and they can use them to learn more about the moon and the universe.