Two children of divorcing parents escape through a magical portal in their pool, into a peaceful world for children.
This audio is just like the original show. You can picture everything that is going on.
Kid actors trying to carry a whole episode seems like a lost cause. It often ends with a mix of overacting and stilted "reading". The two children here is actually quite okay. The adults are caricatures - horrible parents (no child protective services in the twilight zone I guess) and nice old lady.
A simple story with a bit of uncertainty as to the outcome makes this a (slightly) better than average episode.