Final Fantasy X tells the story of Tidus, a superstar blitzball player. In the dramatic opening moments of Final Fantasy X, the charismatic star of the Zanarkand Abes is propelled 1000 years into the future by a mysterious force. Once there, he meets Yuna, a summoner and he learns that her world, Spira, has been ravaged by a malevolent entity known as Sin for the past 1000 years.

According to the teachings of Yevon, Sin could only be vanquished by a summoner. Mystical creatures called Fayth gave the summoner the power to call forth mighty spirits known as aeons, with whose help the summoner could defeat Sin. However, even with their aid, Sin could never be completely destroyed and would always reappear after a period known as the �calm�.

It was Yuna who was the first to break this remorseless pattern, with the help of her guardians, and many willing souls. Once Sin Was defeated, the Fayth, aeons and even Tidus vanished, with the latter sensationally revealed to be figment of the Fayth�s imagination. In spite of the evidence, Yuna could not accept the fate of her beloved Tidus.