Cheapest prices on Prince of Persia: Rival Swords

In Prince of Persia: Rival Swords you make your way home to babylon, taking with him Kaileena the Empress of Time. As the Prince of Persia arrives home instead of returning to his peacefull kingdom he finds that his kingdom has been ravaged by war. Upon arrival the Empress is kidnapped and as the Prince tracks her to the palace he arrives just in time to see her killed.

Her death unleashes the Sands of Time which taints the Prince of Persia, and as he heads to the street hunted as a fugative he realises that they have given him a dark prince.