Age 2140. Humanity live among the stars. Spacetravel is a part of any human`s life. You was pomoted to the new position in your company. And now You are in charge of planetary spaceship docking control center of one of the systems. You show the way to every spaceship in your system where and when to land. One docking station can accept certain type of spaceship. People`s safety is in your hands. Good luck.