The third woolly monkey is born at the park, but its mum rejects it. We also meet heavily pregnant orangutan RoRo who is pregnant for the second time.

The keepers face a challenge when 4 chimps move groups.We meet Rodders and Ash, two chimps who are being hand-reared by keepers who have their breakfast at home.

Keeper Mike travels to Moscow to meet an orphaned baby orangutan named Joly who needs a new home. Meanwhile chimpanzee Eddi has a tantrum.

Joly arrives at the park, but someone isn't pleased to see her. Orangutan Roro gives birth to her second daughter and all the signs look good that the baby will be cared for by mum.

Chimpanzee Charlie needs dental surgery. Roro's baby has to be taken away to be hand-reared. And Seamus moves back to the nursery as he didn't make any friends in Hananya's group.

Jim and Alison are on a rescue mission to Hungary to collect stump-tailed macaque Koko. She has been living in a pet-shop cage for 20 years and the team gets a feisty greeting. At home, Carli and Gypsy have joined the boisterous bachelors.

The orang-utan nursery mob love spending time in their new outside enclosure, and stubborn Hsiao-Ning is even starting to enjoy life. And in Hananya's group, Patricia is being pursued by the alpha male.

There is concern when chimp Joline is struck down by a mystery illness. Elsewhere, stump-tailed macaque Koko is introduced to the great outdoors after 20 years in a cage, and baby woolly monkey Julio is introduced to his family.

Koko the stump-tailed macaque meets her first companion in years. Dinda is about to embark on a new life with her orang family. We meet Gismo, a capuchin with a tragic past. Golden-cheeked gibbons Peanut and Pung-Yo welcome a new arrival.

There is a shock when a court order means a capuchin family have to leave the park. Preparations begin for the rescue of chimp Bryan, who has been living as a photographer's prop in Mexico. Julio joins his woolly monkey family full-time.

Jim and Alison have travelled 5000 miles to collect lively three-year-old chimp Bryan, who has been mistreated and needs a home with his own kind. Alison is frustrated in her efforts to rescue adult chimp Coco from the same cruel owner.

Toddler chimp Bryan recovers from his long journey and settles in to his new home with a hearty breakfast from Lee. There's a medical crisis for chimp Joline when her loss of hair, stiff joints and lack of appetite cause great concern.

The vets examine 17-year-old chimp Freddie who is not his usual boisterous self, and the staff wait to see if Joline will recover from her mystery illness. In the nursery, youngsters Pip and Ben venture outside to play for the first time.

Bryan meets his chimp foster mum Sally, but no one is certain how he will react to her. The park faces an irreplaceable loss when Jim Cronin passes away after a short cancer battle. Will Alison and the team manage to keep his legacy alive?