Sharks have inhabited our oceans for over 400 million years, but just 50 years of overfishing has put many species on the verge of extinction. If sharks disappear, scientists warn the entire ocean ecosystem could collapse.

But on the islands of Raja Ampat Indonesia, the world's first-ever shark rewilding project is under way. Locals and international scientists, led by world-leading shark expert Nesha Ichida, are collaborating to reintroduce endangered zebra sharks into their native waters. We follow the extraordinary journey of a zebra shark 'Sharky', who grows from a tiny creature inside an egg in an aquarium into a brave adult shark, aiming to pave the way for his brothers and sisters to return to the wild. But what will it take for the sharks to survive? And can this groundbreaking rewilding programme provide a blueprint to save sharks across the world?

We examine the increasing threats sharks face, and meet the inspiring individuals, from conservationsists and local islanders to ex-poachers, who are working together to save a species and protect our precious ocean ecosystem. Featuring stunning underwater cinematography, and diverse island landscapes, this is wildlife event like no other.