Homegrown sci-fi flick shines through

Warriors of Future unfolds in a not-too-distant yet unspecified future on an Earth devastated by environmental decay and heightened militarism. People live in special safe zones because the air is too toxic to breathe. At some point, a meteor crashed onto the planet and unleashed a deadly vine named Pandora. When it grows, what's left of the cities dies, but ironically Pandora's unique version of photosynthesis purifies the air. The action starts when a soldier, Tyler (Koo), heads outside the safe zone with a small squad to find the "heart" of Pandora and inject it with a virus that will render the plant inactive, but still able to scrub the atmosphere. When the mission fails, Tyler's best friend and fellow warrior Johnson (Sean Lau) goes on a second mission to rescue the survivors and complete the job.