Navin is an idiot. He grew up in Mississippi as adopted son of a black family but on his 18th birthday he feels he wants to discover the rest of the world and sets out to St. Louis. There everyone exploits his naivety, but then a simple invention brings him a fortune.
After discovering he's not really black like the rest of his family, likable dimwit Navin Johnson runs off on a hilarious misadventure in this comedy classic that takes him from rags to riches and back to rags again. The slaphappy jerk strikes it rich, but life in the fast lane isn't all it's cracked up to be and, in the end, all that really matters to Johnson is his true love.