In an uninhabited desert devoid of life forms (both animal and vegetal), Plus and Minus, two rusty, dilapidated machines try to avoid getting caught under a small rain cloud hovering over them. Their batteries down, they risk getting drenched. Teased by another machine that seems to have unlimited energy and runs circles around them, they realize that the only way they can survive is to unite forces, cooperating in the construction of a strange hybrid.<%YOUTUBE=AXlxrNjHJJ8%>