From writer/director Shane Carruth of Primer/irreversible brain trauma fame.
A man and woman are drawn together, entangled in the life cycle of an ageless organism. Identity becomes an illusion as they struggle to assemble the loose fragments of wrecked lives.
In the movie, a young woman (Amy Seimetz) is abducted and seemingly brainwashed via an organic material harvested from a specific flower. She later meets a man (Carruth) and after the two fall for each other, they come to realize he may also have been subjected to the same process....the film is about the mutual psychosis that can be an essential part of romance, the agreement of a shared madness.
I can't say I find Carruth to be one of the best writer/directors in the business but he is a very interesting one.