When one of the Smurfs wants to emulate Papa Smurf, he decides the best way to do so would be to practice magic. The Smurf sneaks into Gargamel's lab, and steals instructions for a magic potion. The instructions however, don't say what the potion does – the only way to find out is to test it! The Smurf drinks the potion and is turned into a lizard that all the Smurfs are afraid of. Can Papa Smurf change him back? Or will this Smurf be seeing green for the rest of his life? Also featuring the stories "Smurftraps" and "Halloween."