When Gargamel meets a giant with an insatiable appetite, he comes up with a plan to use the giant to destroy the Smurfs: tell him that Smurfs make the most delicious soup in the world! Papa Smurf catches wind of the plot, and begins to create a potion that will enable them to turn the giant, nicknamed "Bigmouth," against Gargamel. But when Bigmouth stumbles into the Smurfs village, the potion isn't ready, and the Smurfs must distract the hungry giant, or meet an untimely end inside its belly.