The incredible story of two beluga whales being released from captivity and back into the wild - as comedian John Bishop follows every step of their complex and deeply moving journey.

John's mission to return Little White and Little Grey from captivity to the Icelandic beluga whale sanctuary continues, as the pair begin the 6,000-mile journey to reach their new home. Following the previous delays in China, the release is already two months behind schedule, and as autumn approaches the whales have little time to put on enough weight and acclimatise to the cold water they will face in the bay.