In July in Alaska, millions of salmon return to their birthplace to spawn. Awaiting them eagerly are bears, sea lions, orcas, eagles, sharks… and our team too: Paul and Thomas, two marine biologists, here to live their passion for the open sea and unforgettable encounters with remarkable and awe-inspiring animals. Among all these incredible predators, there is one they track in particular: the salmon shark… Hold your breath and dive with them into this wild world.