 Harlem s mean streets. As the soundtrack plays "Watch Ya Back," a young man runs through the streets, glancing back, afraid. In a flashback that same day, we see him walk past three young toughs who watch him enter a convenience store. They stare in after him. When he leaves, they give chase and he runs for his life. Why are they chasing him? What s he done? What waits at the end? Whoa.