When Willow Creek Junior High School gets it own radio station, The Saddle Club goes on the air! Hosting a call-in show, however, is a lot more difficult than the three friends ever imagined. At first nobody calls. Then Stevie's brother Chad gets his friends to phone in with silly questions. The Saddle Club tries to fight back by flooding the phone lines with their own calls, but Chad seems to be winning.
Then a caller tells them about a horse in trouble, and The Saddle Club has to decide whether the call is for real. A horse may be in danger, or Chad may be playing tricks again. It's up to The Saddle Club to find out and try to save a horse before it's too late.