But what is Sin? Sin is a powerful force that takes many natural shapes. It incarnates itself into natural disasters such as a hurricane or an earthquake. All of those who confront Sin are overcome by strange dreams.
Tidus, a cheerful and famous player of a sport called Blitzball. One day he awakens and his home is destroyed by an unknown force. Soon after he meets a young woman named Yuna. She is studying the ancient art of summoning. Her father is a master summoner and she is fed up with living in his shadow. Tidus and Yuna come together and are joined by many other people to confront Sin and finish him off once and for all.