It is the year 3003... Humans have finally landed on Mars and created the first Mars space station, the Mars station is one of humanity's greatest achievements. You are one of the people living on the Mars station and you are also the only pilot there. Aliens beings from the planet Zappor are facing extinction because their planet is running out of resources. They have located our solar system, and they want to inhabit Earth because its ecosystem is similar to their planet's ecosystem. In order for them to inhabit Earth, they must end humanity, and to end humanity they want to osculate our solar system in reverse, causing a total collapse of time and gravity... They will osculate until all human civilization is destroyed, with all humans vanished, and then return it back to normal for their inhabitation. The only thing that protects the solar system from being reversibly osculated is the Mars station. So the aliens must first destroy the Mars station. Being so, you are the only pilot on Mars, and because there is not enough time to send you reinforcements, you must protect the Mars station at all costs! You are Earth's only hope! The question now is, are you the Radical Ace that can save humanity?