Sonic and Tails are back for another adventure as they again battle the evil Dr. Eggman (AKA Dr. Robotnik), who is desperately trying to collect all the Chaos Emeralds in order to rebuild his Death Egg.
Just when you thought the world was safe from the Syndicate and its shady leader, Mr. X, they have returned to torment the city once again.
The situation is critical. The evil Doctor K has created an army of deranged replicants in order to take over the world, and only two can stop him - Andy Attacker and Ben Breaker - the top soldiers of the CIA's special Crackdown force.
In this follow-up to Thunder Blade, you'll fly a new and improved attack helicopter in a series of attacks against guerilla armies that are bent on taking over the world.