Resident capuchin TJ causes mischief when he joins the new Chilean arrivals, and alpha male Paddy has to step in. Orang-utan Amy is pregnant but the keepers worry she will not be able to care for a baby, and chimps from Hananya's group get their teeth cleaned.

A baby chimp tries to prove he is grown up enough to go it alone. The Bachelor Boys' reputation takes a knock when they become frightened of a new toy. Two of Hananya's charges pluck up the courage to explore their surroundings, and the Chilean capuchins get their first taste of life in the outside world.