This anime is about a middle schooler going to a weird desert. There is not really much going on with it. The sole purpose of this OVA seems to be teaching morals and values to 5 year old kids.
Be grateful for what you have and protect your monuments.
If you're any older than 12 just don't bother trying to watch it. The story is painfully plain. The voice acting in the dub is decent. By the end of this 25 minutes episode, the MC starts respecting the value of non-material things like art and gifts. The animation feels like there wasn't any effort put into it. Same with sound design. That's all there is to be said.