Unbelievable but true, this is the story of two whales, two Pauls and two boys.

The whales are Haida and Chimo, captive orcas who lived in an aquarium called Sealand of the Pacific in the 1970s.

The Pauls are Paul Horn, a professional flute musician, and Dr. Paul Spong, a scientist studying the orcas in order to learn more about these mystifying creatures.

And the boys are Marlen and Robin, Paul Horn's sons, who are fascinated with the orcas despite their father's fear of the giant whales.

What follows is the spellbinding story of how the Pauls, through the power of music, learn to communicate with the orcas -- and set into motion an entire anti-captivity movement dedicated to protecting these intelligent and majestic animals.