Underwater Cinematographer and explorer Dean Cropp is joined by a crew of young adventurers to follow in his father's footsteps on an expedition into the most remote, pristine, and beautiful parts of Australias Coral Sea.
Dean and the crew head to Middleton Reef. On the journey, they are becalmed and take a mesmerising ocean swim in water that is 4.5km deep. Meanwhile, Tyler has to perform a dangerous operation to fix the broken propeller.