Explores the extraordinary strategies monkeys, apes, and lemurs use to survive in the most unexpected places. Times are hard for a troop of bearded capuchins in Brazil's badlands. With no rain for eight months, food and water are scarce.

In the Amazon, a female spider monkey elder leads her troop to a unique food resource; raging floodwaters bring aquatic plants within reach.

Explores the scientists making groundbreaking discoveries about this remarkable animal family, including researcher Dr Cat Hobaiter, who has spent 13 years studying chimpanzees in the jungles of Uganda.