When never-before-seen footage surfaces of a pack of orcas killing a great white, Dickie Chivell springs into action, building an underwater habitat called 'Shark House.'  His mission is to live on the sea floor for seven days, looking for the last remaining great white sharks in South African waters.

A new ocean phenomenon known as The Blob sends juvenile great white sharks straight into a feeding frenzy of monster 20-foot adults off Guadalupe Island. A team of shark experts dives deep to discover if the young sharks survive or become a snack.