The crew from the nationally-syndicated talk radio show ScubaRadio comes to sleepy Withrow Key for a lionfish rodeo, but immediately Jackson Pauley feels something isn’t right. “Greg the Divemaster” Holt can barely dive. When Jackson spears a lionfish, Greg grabs it and gets stung. The radio show is a disaster. When Duffy, the local bar owner, goes missing Jackson, Littlebear and Zach jump into action to unravel the mystery and save their friend.