 CIA agent John Clark as created a NATO based anti-terrorist team called Rainbow that is comprised of the best military, police and intelligentsia agents from American and Europe. From their base in England they can strike at terrorists the world over. After 3 terrorist attacks in a relatively short space of time, it becomes clear that someone is setting up terrorists to be killed. Suspicion falls upon John Brightling and his company, Horizon. As the Rainbow field commander, you must lead your troops to victory, and in the process, find out what Brightling is up to and what it has to do with the 2000 Olympics.