The team discovers endangered orang-utans in need of rescue in Taiwan, while back in Dorset, monkeys Arthur and Sinbad enjoy a few creature comforts. A mercy mission unfolds in Africa as one Royal Marine fights to save the life of a baby chimp.
Dave suspects Cherry the chimp is pregnant, so swiftly arranges for her to take a test, Jeremy longs for a good night's sleep and there's disturbing news from Sierra Leone about orphaned baby Harry.
A precious Taiwanese cargo makes its way to Britain, concerns are raised about much-loved ring-tailed lemur Alice and there's a trip into the west African jungle to see how one baby chimp has settled into military life.
The staff anxiously await the results of lemur Alice's biopsy, and chimp Peggy unexpectedly gives birth, but is unable to care for her newborn baby.
Alison Cronin traces a capuchin monkey living the life of a Londoner, new mother Peggy rejects her baby at birth and preparations are made to rescue young chimp Harry from war-torn Sierra Leone.
Keeper Dave heads for the chemist to buy the chimps a little something for the weekend, Mike receives a present from the troublesome Gordon and, in Sierra Leone, Harry leaves his military foster home and is finally on his way to Monkey World.
A population explosion at the park takes place with a chimpanzee baby boom, and keeper Jeremy has sleepless nights feeding chimp Ben.
Jim Cronin travels to Istanbul to be reunited with Cookie, the baby chimp he thought he would never see again.
Alison heads out on the trail of a pet capuchin monkey living the life of a Londoner, and there is mystery surrounding a gibbon seized by customs officers.
Chimp youngsters Ben and Pip meet their foster mum Sally, Johni undergoes a biopsy to find the cause of her lump, and Alison reports on marmoset duo Bonnie and Clyde. Chris Serle narrates.
The park awaits its second orang-utan birth, and young chimps Ben and Pip are beginning to grow up and must join the nursery.
Keeper Jeremy tries to cope with larger-than-life youngsters Ben and Pip, there is a report on long-time resident Arthur, and officers set off on an emergency mission to Russia.
Chimps Seamus and Carli attempt to wind up Lulu, and the orang-utans get some prickly prizes to help with their boredom.
Youngsters Ben and Pip meet their boisterous uncle, and orang-utan Hsiao Quai gives birth. Daily life at Europe's largest ape rescue centre in Dorset.