A troop of marmosets find themselves coming under attack from a murder of crows. Jean Johansson tries to get the Siberian tigers to cool off in their pool, Kate discovers why the park's pelican expert has won a major award, and Ben finds out which part of a fruit cocktail the lemurs love the most. Meanwhile, a carefully selected group of keepers are heading to the front line of wildlife conservation to get an unprecedented insight into the animal that they care for in the UK, and they meet the army of experts required to keep these precious creatures safe in the Kenyan wilderness.