Brothers Martin and Chris Kratt mix wildlife documentary, creative animation and humorous dialogue to present a program about all kinds of wild creatures. They are assisted at their research center by nature enthusiast Allison, and a wise-cracking, animated cartoon friend named Ttark. In this episode, the brothers visit the rainforests of Costa Rica, where they encounter just a few of the many creatures who live there. Some of the animals and insects they look at in depth are tapirs, jaguars, tucans, hummingbirds and 3-toed sloths.