In July 2014, 27-year-old experienced outdoorsman Cody Dial, the son of esteemed National Geographic Explorer Roman Dial, embarked on an expedition through the Corcovado National Park in Costa Rica. He never emerged. Now Cody's father, Roman Dial, has returned to Costa Rica. But this time he comes with a team of highly trained independent investigators and a camera crew in tow to pursue a deeply personal investigation into Cody's mysterious disappearance.