A voyage through the last great frontier on earth: the ocean. Diving into the unexplored liquid space that exists just beneath the surface of our planet, awesome realms where humans, and especially cameras, have rarely dared to go are explored: darting with lightning speed through fierce schools of sharks, riding over stormy waves with massive killer whales, fighting for survival with families of polar bears and seals, and even plunging into pitch-black chasms that are home to wild, alien-like creatures so rare they have never been seen before on film. Recounting the amazing stories of wildlife in its untouched state, the result is a visual and musical event that viscerally evokes the wonder, power and drama of the deep blue sea.