In southwestern Australia, an unknown predator with a taste for Great White and Mako Sharks ignites fears of sea monsters in the abyss. Filmmakers Dave and Jennene Riggs join Dr. Tristan Guttridge and Rosie Moore in attempt to track down the killer.

Alison Towner and her team investigate a new Great White hotspot off the coast of South Africa. Equipped with cutting-edge fin cameras, tracking tags, and underwater surveillance, researchers unveil unusual behavior in these massive apex predators.