The Shark Men continue the search for a great white named Amy who they believe is about to give birth. The team will search by air and sea, hoping for the biggest accomplishment of their entire scientific mission. The Sea of Cortez seems to be a perfect habitat for a great white shark nursery, though it's full of man-made dangers. It is a high-traffic area for use of long lines and gill nets, and though sharks aren't the target, they often get caught in the crossfire.