The concept of the film is based on an ancient Chinese proverb
that breaks life down into four emotional cornerstones - Happiness (played by
Whitaker), Pleasure (Fraser),
Sorrow (Gellar) and
Love (Bacon). The proverb
speaks of these emotions, not as isolated fragments of feelings,
but as elements that make up the whole of the human existence. Each
of the four main protagonists is based on one of the four emotions;
and like the proverb their paths are inextricably linked to each
other.
Trailer
http://www.imdb.com/title/tt0485851/