Long time ago, world was nice green place. Just about everything was lovely light green, but then, on one day, something bad happened....
It was nice sunny day, in Greenville. Sun was shining bright green light. Then, all out of sudden, big red crystal shard burst down from heavens, and knocked down the townhall. Tiny red critters spawned from under it, thousands of them! They started eating everything, even living green boxmen! They took the shape of boxmen, and started their invasion.
You must stop it! Your mission is this: Find all elite Green Beret members from all around the world, and prepare for counter strike!