Wildlife vet, Nic Masters and local vet, Dave Harding are called to the park due to serious concerns for the health of elderly chimp Zoe, one of the original nine chimps. Sadly Alison has to decide to let Zoe go peacefully. New arrival, Geoffroys marmoset Gizmo is settling in well but needs to be treated for parasites before he can meet his new companion. At the Pond woolly house, Enzo’s group of six get to explore a new outside enclosure for the first time. While Mueller’s gibbon Dalumie enjoys a pamper session and the lemurs get to grips with a new tree stump down at Malagasy.