Future World movie plot

After the end of the world, the entire world was destroyed by heat, disease, and years of war. The protagonist is a young man with a good background. In order to treat his seriously ill mother, he and his loyal bodyguards are searching for the rumored medicine in the desolate land. It is only unknown whether this medicine exists. During the journey, men have to face many dangers. In addition to the harsh environment, there are also assassinations by humanoid robots controlled by warlords   .