 The plot develops in two different paths depending on the side you take. If you choose GDI you get to play field commander Michael McNeil and try to rid the world of Kane and his Brotherhood of NOD. Fighting around the world (That means: North America and Europe), gaining the help of the Forgotten and enlisting them in the massive battle. And in the end the good guys win and the Kodiak flies to from the night side to the day side of Earth. If you choose NOD you get to play Anton Slavik and try to take over the Brotherhood of NOD and make the day that  The Technology of Peace Will Flow Throughout the Land  come. Then the presumed dead Kane returns and you play under him taking the fight to the GDI s territory for world domin...I mean peace. And in the end the bad guys win and the Montauk can t fly from the night side to the day side of the Earth because the Earth is glowing green.