It all began at the opera house in Paris.
Haunted by the spirit out Spirit is "Erik" the mask to hide your face ugly.
He lived in a room in the basement of the theater.
He falls in love with "Christine" singer. He had gave her talent in singing and hopes to get her to stay with. Then one day, "Raoul" childhood love of Christine's come back.
Erik jealous, so he kidnapped her from the stage to the basement.
Raul knows, so as to help Christine with the help of former District of Persian texts.
Later, when The Phantom of the Opera, Erik was filled with pity kiss of Christine and they have no way of knowing that their love is back. So let Christine and Raoul are together.