Three teams of researchers return to one of the last hunting grounds for AIR JAWS. They will use decoys, drones and underwater cameras to count the number of breaches and collect data on hunting techniques to see if the shark population is rebounding.

While a global lockdown quiets the ocean and lures New Zealand's biggest great whites out of hiding, expert Kina Scollay climbs inside a mobile dive cage, the "Snackbox," on a quest to find monster shark 747 and solve an even bigger mystery.