Alison Cronin visits Dao Tien island in Vietnam, the site of Monkey World's foreign sanctuary for endangered primates. Meanwhile, the team learns that two rare monkeys are being kept in a theme park outside Ho Chi Minh City, and tries to get them freed.

Alison Cronin springs into action when an adult female chimpanzee in Mexico urgently needs the team's help. Even Lulu joins in the fun when the nursery chimps have a play session, and Kai tries to act independent and grown up while discouraging Amy from joining in his games.