Elephants and humans are both ecosystem engineers on the island of Sumatra, but with both requiring large territory in the forest, coexisting has not always been easy in a rainforest with limited space and resources. Elephants play a crucial role in maintaining a healthy environment, but with humans now trying to build farms that border the forest, both species became at risk. Today, elephant trainers are beginning to work with the local animals to safely protect the forest for humans and animals alike.