The team at Dao Tien in Vietnam cares for a rescued douc monkey, two golden-cheeked gibbons take to the trees, and a slimmed-down loris enjoys success in its search for a mate.
Orangutan Silvestre undergoes a health check in preparation for moving to a new home, Sasha takes a trip outside for the first time, and Gismo's capuchin group play in a pit of pinecones.
It is vet day for some of the primates, and Nelly the loris causes some concern during the checkup. Meanwhile, Sasha the chimp gets to know some of Bryan's group while Teo the gibbon tackles some hanging feeders.
There are plenty of comings and goings at the park as a marmoset family heads to a new home, Tya returns looking for love, and the Barn Woollies welcome baby Xenia to their tight-knit group.
Dr Alison Cronin and animal manager Jeremy return from a trip to Argentina with Sasha and Kangoo, two chimpanzees are given a new home at the park, and Tuan's orangutans receive a treat.
Alison and Jeremy prepare to fly Sasha and Kangoo from Argentina to Dorset, which means crating and loading them in the middle of the night.
Alison and Jeremy travel to Argentina to meet two chimps as they prepare to bring them back to Dorset. The team attempt to sort out the macaques' hierarchy problems.
Top male Paulo protests a woolly weigh in, the siamang gibbons have a new experience and the capuchins use some clever tricks to track down some tasty treats.
A health check for newly rescued tamarin Red raises alarm, newcomer capuchin Matty squares up to dominant male Erico and the chimps get a tasty treat.
Chimp Gypsy is very unwell, Dodger the capuchin meets some new ladies and chimp Bart has eyes for just one thing.
Alison receives footage of a pet Tamarin monkey in need of a home, Bruce the loris gets a check-up and golden-cheeked gibbons Kim and Tien get cosy.
Capuchin Louis makes the most out of being let outside for the first time - playing a game of hide and sneak with Donna. Slow loris Bruce gets botox.
Pregnant woolly monkey Oriana faces down death as she is rushed to the operating table, and baby marmoset TikTok meets his potential foster dad.
As Alison offers a tiny marmoset a home and a family, the Hananya's chimps do a work out and the two new capuchins meet dominant female Phoenix.
Alison arrives back at the park with rescued chimpanzee Toprish, and the team are keen to greet her. Marmoset Freya is on the road to recovery after a leg operation.
Alison and wildlife vet John Lewis are in Turkey to collect a young chimp previously stolen from the wild and kept as a pet.
A new baby woolly enters the world, while there's sadness over the passing of one of the park's most iconic characters.
There is a heart stopping moment for the team when something goes wrong with gibbon Kitty, and Saki monkey Chloe meets an over ardent suitor.
Vet Cesar faces a tough challenge when marmoset Freya suffers a possible life changing injury, and Saki monkey Desmond enjoys his new outdoor enclosure.
Alison visits Desmond and Tutu, two potential companions for lonely saki monkey Chloe. Meanwhile, the chimps go football crazy.