The earth has been invaded by a species that take over the minds of their human hosts while leaving their bodies intact, and most of humanity has succumbed. But Melanie Stryder refuses to fade away. Wanderer, the invading "soul" who has been given Melanie's body, knew about the challenges of living inside a human: the overwhelming emotions, the too vivid memories. But there was one difficulty Wanderer didn't expect: the former tenant of her body refusing to relinquish possession of her mind. Melanie fills Wanderer's thoughts with visions of the man Melanie loves - Jared, a human who still lives in hiding. Unable to separate herself from her body's desires, Wanderer yearns for a man she's never met. As outside forces make Wanderer and Melanie unwilling allies, they set off to search for the man they both love.
The Host is a 2013 romantic science fiction thriller film. It tells the story of a young woman, Melanie, who is captured after the human race has been taken over by parasitic aliens called "Souls". After Melanie is infused with a soul called "Wanderer", Melanie and the alien "Soul" vie for control of her body. Written and directed by Andrew Niccol, the film stars Saoirse Ronan, Max Irons, Jake Abel, William Hurt, and Diane Kruger. (from Wikipedia)
These teens are struggling with internal problems - literally. Read more behind the lives of individuals who share souls or worlds, whether they like it or not.