A smurf wants to emulate Papa Smurf, and decides the best way to do so would be to practice magic. So, the smurf sneaks into Gargamel's lab and steals instructions for a magic potion. The smurf foolishly drinks the potion and is turned into a monstrous lizard that all of the smurfs fear. Can Papa Smurf create an antidote?

The Blue Smurfs meet the Grey Smurfs, negative versions of themselves with all of the Smurfs bad habits. Now someone is proposing they build a wall around the Smurfs' village! Will the Grey Smurfs have to pay for it?