In the near future, the Earth is attacked by an extraterrestrial civilization. The soldiers of Space Defense had fought bravely, but they were defeated, and now the last frontier is a space station equipped with the weapon that the enemy cannot resist.
To neutralize it, the enemy captured the drone control system, and is now trying to destroy the core of the station - the reactor that powers it, including the defense weapon.
You are the last hope of the planet! Your task is to protect the reactor at all costs!