Act II. Swanhilda and her girlfriends explore Dr. Coppélius's workroom. It is filled with life-size dolls. Swanhilda discovers Coppélia is also a doll. Coppélius enters and chases the girls away. Swanhilda hides. Frantz climbs through the window. Coppélius welcomes him. He needs a human sacrifice to bring Coppélia to life.