Silhouette

Charity is an average scientist, trying to find a plant that can cure schizophrenia in a rainforest. Well, maybe not so average.
When she finally finds a plant, she discovers it only grows in limited quantities.
And that somebody is following her.
He comes late at night, and eats all of the plants in the area.
She keeps growing more and more insane as this unknown person destroys her rare discovery.
Will she find him, or will she lose the precious plant?