Vera calls in the experts when she becomes unable to care for her pet marmoset, Alberto prepares to leave Spain and there's a report on a three-inch-tall monkey living life to the full at the park.
Mike is kept busy on day duty and Jeremy has his work cut out trying to coax a new mum out of her baby blues. The woolly monkeys welcome a new arrival, while Nick ventures outside for the first time in his life, and Jim receives a make-or-break call from Turkey regarding chimpanzee Kuki.
Orang-utan Hsiao Ning celebrates her first birthday, young monkey Eddi pushes her luck with dad Paddy, and a new addition arrives at the park in the form of a golden-cheeked gibbon. Narrated by Chris Serle.
A golden-cheeked gibbon named Peanut amuses everyone with her unique brand of fun, the baby orang-utan is finally given a name and the team encounters problems getting Turkish chimpanzee Kuki back to Monkey World.
The park's second orang-utan birth is just around the corner, and the staff have to keep a close eye on the mum-to-be, while young chimps Pip and Ben prepare to join the nursery, and recent arrival Alberto undergoes an important operation.
Jim Cronin is reunited with mischievous chimp Kuki, while bachelor chimp Alberto explores his new home at the reserve in Dorset.
Recent arrival Kuki settles into her new home, and news reaches the sanctuary that she may have a half-sister living in Turkey.
The lemurs are separated following growing tensions among the group, and Kuki is introduced to her new family at the park.
Orang-utan Roro is in a bad mood and Jeremy Keeling worries about what could be wrong with one of his charges. Spanish chimp Alberto leaves his cage, while Sinbad is concerned when two new arrivals move in with him.
An update on chimpanzee Charlie, and a report on how Harry and her marmoset family are progressing.
The team arrives in Turkey to rescue Kuki's half-sister Zeynep, only to find several obstacles in their way. Back in Dorset, marmoset mother Harry introduces her newborn offspring, and there is a chance to see how the orang-utans and chimp toddler Eddi are getting on.
Jim and Alison try to rescue an injured capuchin monkey from the pet trade, baby orang-utan Hsiao Ning has an adventure and Zeynep is reunited with her half-sister Kuki.
Half-sisters Kuki and Zeynep take their next big step, and staff at the Dorset primate centre teach some of the other residents how to help with their own health care. Meanwhile, the lemurs and chimpanzees get their hands on some bubbly.
Bachelor chimp Alberto feels exhausted, Peanut the gibbon has a colourful experience, and animal manager Jeremy organises a chimpanzee photo shoot. Plus, a chance to catch up with Eddi, who is growing up fast in Paddy's group. Chris Serle narrates.