Jeff travels to the rainforests of Costa Rica to explore the world of sloths, the country's most iconic resident. Jeff visits the Sloth Sanctuary where they rescue and rehabilitate injured and orphaned sloths. Jeff meets Buttercup, a 23 year-old three-toed sloth; gets a chance to feed and play with baby sloths; works alongside the veterinarians helping the injured sloths; and teams up with zoologist Becky as she conducts her research to better understand the lives of these animals.