Everything is peaceful in Smurf Village ... until Gargamel tries to rule the world. He creates Smurf-like creatures called the Naughties to help him harness the power of the Smurfs, but only true-blue Smurfs have magical Smurf essence. When he finds out that Smurfette knows a secret spell that can turn the Naughties into true-blue Smurfs, he smurfnaps her and locks her up in Paris. Papa Smurf and the rest of the Smurfs head to Paris ... but can they rescue Smurfette before she reveals the secret formula?