Your task in Planet Defender is to patrol the airspace over the planet. As you have noticed, this is not our native land at all, but a completely different planet. It was discovered recently, and when it turned out that its bowels are rich in resources, it was decided to make it their own by sending ships there with various kinds of specialists. But it soon became clear that not only earthlings liked the planet, someone else wants to get it. Then it was decided to send a fighter ship on duty to protect the planet from intruders. You are the commander of the ship and will control the flights, as well as destroy enemy flying objects. If they appear in Planet Defender.