The Smurfs - 1x31 - Schtroumpfe-moi ton secret - Partie 2- Followmy.tv

When Brainy learns that Gargamel is trying to transform into a Smurf, he puts a new security protocol in place: the Smurfs must share one of their secrets to prove their identity. Eventually, Gargamel infiltrates the village disguised as a Smurf, so Brainy has to save his friends.