The Keating kids are shocked and intrigued when a tiny visitor suddenly appears during a lightning storm. Once they realize the visitor is friendly and needs their help to return to his dimension, they do everything in their power to help him. As time is running out, they enlist the help of others, but someone is working against them and not with them.
Will they be able to help their traveler return to its own dimension? Or will it be stuck in this dimension forever?
You can find out when you listen to The Visitor from 4-D.