Title reads Inca, but narrator and dialog say Aztec. The two were completely different, not even having their empires on the same continent.
When the good guys meet up in the desert, their goal is to reach the secret tribe ahead of the bad guys to warn them of the imminent threat. Even knowing the attackers have a head start, they take the time for a leisurely meal and chat around a campfire before heading out. Not the stuff of which heroes are made.