Complex sentence: After smelling the sacrificial paint in his son's body and hearing that he was let go, his father demands they head back to the Timbiras' tribe in order for them to continue the sacrifice ceremony.
Split into simpler sentences: After smelling the sacrificial paint in his son's body and hearing that he was let go, his father demands they head back to the Timbiras' tribe. He and his father return to the Timbiras' tribe in order to continue the sacrifice ceremony.