Year 2399.
After the big crisis on Earth on in the 22nd century,Humans started to build colonies on Mars.
Skycity finally is built,and we're looking foreward to the 25th century...
In this scenario you're close to Skycity and low on fuel,try to land on one of the many landingpads there,also there is a runway for the ones who want to practice in the Mars atmosphere.