It starts out with Vanity and Smurfstorm getting into trouble, picking flowers and they've turned into dolls because of Gargamel's niece, Rowena and they successfully escapes them but now, they are still in doll form, trying to become normal with Papa Smurf making a potion to turn them back

Papa Smurf: "this is gonna take a whole day to make, so you might need to be like this a little longer, Storm and Vanity.."

Vanity: "No! I refuse! Can't you make it fast now!?"

Papa: "sorry, the potion is gonna take a day to make"

Storm: "great.. we'll be like this for long time.. and even our mouths are just string!!"