When Paul, a lonely biochemist, and Diane, a socially inept comparative psychobiologist, come across a gypsy's mysterious potion, they're skeptical. But when chimps respond favorably, the scientists have no choice but to test it on themselves, with hilarious and charming results.
In this charming romantic comedy, a brilliant but lonely biochemist (Tate Donovan) gets a mysterious potion from a gypsy who guarantees it will turn his life around. After showing it to his co-worker (Sandra Bullock), a shy animal psychobiologist, they achieve amazing amorous results in a chimpanzee experiment. Now the only way to see if it works on humans is to test it on themselves.
A geeky biochemist and a nerd psycho-biologist are perfect for each other, but they just don't know it. But a gypsy's gift of a love elixir makes them both irresistible to everyone else. After numerous romantic hijinks, they find paradise with one another.