Clara is upset by the story's ending, but Drosselmeier tells her that the Nutcracker will break his curse if he can defeat the Mouse King. In the middle of the night, Clara returns to the living room to spend time with the Nutcracker, when suddenly the Mouse King and an army of mice appear. A ghostly apparition of Drosselmeier also arrives and casts a spell that breathes life into all the dolls, including the Nutcracker, Marie, Trudy and the toy soldier Pantaloon. The two parties engage in battle, in which course the Mouse King threatens to kill the Nutcracker. Clara prevents this by throwing her slipper at the Mouse King, but then slips on a toy cannonball, falls backwards and hits her head, losing consciousness. The next morning, while she recovers, Drosselmeier comes visiting. Clara accuses him of putting the Nutcracker - his enchanted nephew - in danger, but Drosselmeier explains that only Clara can help him break the curse.