Monkey explorers Otis and Lewis are back and ready to solve another one of history's greatest mysteries! These chimps off the old block don't monkey around! Watch them jump in their state-of-the-art hot air balloon and speed to a new learning adventure! This time around Otis and Lewis are looking into the mysteries of Machu Picchu! Will these adventurous monkeys get to the bottom of the mystery and find out the facts? Find out with Otis And Lewis: Mystery Of Machu Picchu!