In this episode, vet Arga sets out to rescue a newly orphaned one-year-old orangutan from a remote village. Meanwhile, 'Big Boy' Beni has a gum infection and is put on an even stricter diet. His beloved bananas are off the menu. When Arga gets back to the school with the orphan, Josh, he's found to have a broken wrist. The release candidates have passed all their health checks and embark on the 24-hour journey by road and river to the wild. Back at school, Beni's cravings get the better of him and he attempts the biggest banana heist in the school's history. Finally, it's an extremely emotional moment for staff when five adult orangutans are at last set free in the wild.