To the north of Ogon it is said that the Kulu people are under the protection of the Zul Kassai, immortal gods with red skin, When a bloodthirsty Tog assassinates the family of the young Ubu, the latter presents himself to his gods demanding justice. The decision is made: the Zul Kassai will not wage war with the Tog. Roass'a is not of this opinion and decides to brave the forbidden and to accompany Ubu in tog country.