The story begins with a aerial attack on New York City by aliens, and it's up to you as a pilot to save the city from destruction. You're flying over one screen, but there are plenty of action-packed moments happening simultaneously. The skyscrapers and subway tunnels provide a challenging backdrop for your flight. Your mission is to shoot down the alien invaders before they reach the buildings.
The gameplay is fast-paced and requires quick reflexes. You'll need to navigate your plane through waves of aliens, each with its own behaviors and challenges. The aliens can drop bombs from the sky, destroy buildings, or lay eggs that hatch into destructive creatures. To cope with these threats, you'll have to fuel up when low on energy, shoot down enemies before they reach the ground, and venture into the subway tunnels to eliminate baby aliens threatening the city's structures. Your goal is to progress through stages, getting tougher and more demanding foes at each level.