I really don't want to say anything to spoil this movie, it's a great movie though. The plot follows a detective as he tries to unravel a serial killer's wake of murders. When the reality of what was happening began setting in, the truth behind secret military genetic experiments, know as Project Lucas, are slowly revieled. This movie is a great Scifi Movie and though it is complelty different than American Scifi such as the Matrix, it would probaly be just as amusing to any fan of good SciFi. Over all "Yesterday" is a little violent, but the ideas and concepts within the plot are nothing less than clasic Science Fiction.