The Secret World of Og is a children's adventure about three young girls 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".
Talented musician and free spirit Libby chafes under the rule of her divorced journalist mother, so she seeks emancipation from her parents and hits the road, soon joining the ranks of a traveling carnival. She gains the freedom she has longed for but learns some hard lessons along the way.
Police officer Patty Butler, alias "Chicklet," is the live-in girlfriend of Thomas 'Stick' Henderson to gather evidence. Detective Bo Lockley is instructed to try to find her, not knowing she's also a cop.