In the premiere of the TED Idea Search, we travel to Sydney, Australia, where 10 brilliant people take the stage for the shot of a lifetime: a chance to speak at the TED conference in Vancouver. From a wildlife scientist deploying AI to bust illegal trafficking networks to Australia's own human rights commissioner sounding the alarm on brain-reading technology, these speakers bring ideas that could genuinely shift how we live. But only one can win — and the choice comes down to a single, unforgettable talk that leaves the audience (and the judges) blown away.