The Smurfs 2 movie clip - Brewing the Formula

The Smurfs 2 movie clip - Brewing the Formula - Smurfette (Katy Perry) reluctantly gives Gargamel (Hank Azaria) the formula to turn Vexy (Christina Ricci) and Hackus (J.B.

Smoove) into Smurfs.

Plot synopsis: Hoping to harness the magical Smurf-essence, evil wizard Gargamel creates a pair of Smurflike creatures, called Naughties.

However, only a real Smurf can give Gargamel what he wants, so he kidnaps Smurfette to force her to cast a spell that will transform the Naughties into Smurfs.

Papa, Clumsy and the rest of the Smurfs reunite with their human friends Patrick (Neil Patrick Harris) and Grace (Jayma Mays) to rescue Smurfette from the wizard's clutches.

Cast: Brendan Gleeson, Christina Ricci, George Lopez, JB Smoove, John Oliver, Neil Patrick Harris