There's an escape at Chester Zoo in this episode. The Sumatran orangutans have been getting used to new quarters, when keepers see from CCTV that Subis, Tuti, Siska and Indah have gone missing. They find Subis in the roof of the Monsoon Forest: an area that's strictly off-limits to orangutans. But Subis seems to be enjoying a day out, trying on a fire hydrant cover and some vet's gloves for size. The keepers must rely on their understanding of the escapees to try to tempt them back inside. Family dynamics are always shifting in Chester's animal groups. In the meerkat house, the dominant female is facing trouble, from her own daughter. Known as Number 13, the daughter is launching physical attacks on Mum, in a struggle for dominance.