Prince of Persia: Arabian Nights

The Sultan of Persia and his son-in-law are visiting the Sultan's brother, Assan. The friendly family meeting soon turns into a nightmare: Assan kills the young Prince's bodyguards, locks him up in a prison, and captures the Sultan. The reason is a little disagreement between the brothers regarding matrimonial arrangements: it appears that the Sultan had promised his daughter to Assan's son, Rugnor, and later broke his promise by letting her marry the Prince.