So this plot is based on a anime movie called REDLINE. It is basically set in a universe where there are planets that the main attraction is racing. Not just any racing though, racing that involves racing in some dangerous places. Some of the racers may even try to kill each other.
Our characters would be two racers. That would be competing on the race circuit. They would be rivals, but as they start to race together more they start to find comfort in each other. Is it love, or just lust? Will the two get involved with the mob? Will one die and the other left to fend for themselves? (Basically you can kill your character at any time and have a new on take its place if you see fit).
There is a mature themes, violence, drugs, sex ya know all that jazz that comes with being an intergalactic racer.
REDLINE Trailer