The Secret World of Og (2006) is a Animation, Family series that follows the Secret World of Og is a children's adventure about 4 children who venture into an underground cavern beneath their playhouse to look for their lost baby brother. There, they discover a land of little green people who are enamored by the world above but won't allow anyone to leave their cavern for fear they might "tell". The Secret World of Og is not currently listed with streaming providers in your selected region, but availability can change over time. Fans of animation series may also want to explore similar titles below.