This is the story of a poor, ugly, but very kind boy, Quasimodo. His mother is a gypsy, it means people who comes from India to Europe, and they are discriminated against Europeans.
Frollo is a master of Quasimodo, and he rules over his town. He absolutely hates gypsies and treats them bad in the town. Actually, he killed Ouasimodo's mother only because she is a gypsy, and in that time Quasimodo was just a little baby. Frollo was told by a priest that he sould take care of the baby to escape from his sin, so Frollo decided to bring him up in the bell tower of Notre Dame as a man who hits the bell.
Quasimodo grows to adulthood, but he has never gone outside of the bell tower. His friends is only 3 stone statues. But he can't stand to stay inside the bell tower on the day of festival, and he breaks promise with Frollo.
In the beggining, Quasimodo enjoys the festival, but he was ill-treated by citizens once they know that Quasimodo is so ugly that he likes a monster. When Esmeralda, she is a very popular girl in the town but is a gypsy, sees that bad treatment, she runs to Quasimodo and helps him. That moves Quasimodo, he has never treated like that from human, and finally he falls in love with Esmeralda.
However, one more man falls in love with Esmeralla, Phoebus, he is a general of the nights in the town. Originally, Phoebus comes to protect or help Frollo, but Phoebus can't follow what Frollo thinks and does against gypsies, and he disobeys Frollo and makes him fury.
Quasimodo gets shocked to know that Esmeralda and Phoebus love each other. But Quasimodo decided to cooperate with Phoebus to save Esmeralda from Frollo.
Frollo desperately tries to find and kill Esmeralda, and in the end she is caught and is being executed. But, Quasimodo and Phoebus save her with citizens. In the battle, Frollo dies in the fire, and the town becames peaceful even for gypsies.
Now, Quasimodo is not discriminated bacause he is a hero to save the town. He finally gets free from the Frollo and he can go outside of the bell tower whenever he wants to do.