Brad Dillard loves radio. He tells Whit that he wishes a radio station existed just for kids. Whit is intrigued by the idea and shows Brad all sorts of old broadcasting equipment that came with the building when he bought Whit's End. Whit says he'll provide the equipment if Brad will run the station. Brad agrees and calls all the kids together. Everyone is enthusiastic, especially a nerdy little kid named Sherman who is a whiz at electronics. The gang all agrees to help Brad get "Kids' Radio" off the ground.

But soon Brad and Sherman learn that what kids promise and what they deliver are two different things. The only ones who put any real work into the station are Brad and Sherman! They work hard to get it on the air, and once they do, they work to keep it on the air.

After a while the work starts to take its toll, making both Brad and Sherman frazzled. Brad's father tells Whit that Brad is endangering his health by working so hard. Brad cannot continue. Whit agrees. He goes on the air to praise Brad and Sherman for their commitment and mildly scolds the kids listening for not following through on their promise to help. Whit also announces that everyone interested in keeping Kid's Radio on the air should meet at Whit's End at 3 p.m. the next day. Unfortunately, no one shows. Brad, Sherman, and Whit are disappointed - until the manager of a local station walks in the door. The manager says he loves the show and wants it for his Saturday morning lineup. Brad and Sherman happily agree, having learned firsthand the value of perseverance.