People get much from nature resource, but they know little about them
Few jungle remnants still exist in the desert of ruins, however; people with evil intention want to get there and steal the shining ball with mystery power. The jungle fade away after the ball had stolen, and an unknown girl fight against people in order to protect jungle. Sealed robot spiders become offensive because forest is withering, that means nature start to fight back.
From the angle of nature, we are thieves.
We like the thieves and get things from nature, only to return back.