Avery, Ella, and Evan make a pair of dolphin friends, Marco and Polo, in Cocoa Beach, Florida. Then, when dolphins start disappearing up and down the coast, the kids are determined to solve the case.
Avery, Ella, and Evan make a pair of dolphin friends, Marco and Polo, in Cocoa Beach, Florida. Then, when dolphins start disappearing up and down the coast, the kids are determined to solve the case.
