Corporal Zane Creswell is stationed on board the U.S.S. Excelsior, a space exploration vessel as part of the Marine Security Force in a future where gay Marines serve right alongside of their straight brothers and sisters.

A new batch of replacements shuttle in, and Creswell experiences a strong attraction to a Private coming on board and they arrange to meet privately to discuss life on the ship. This leads to one hot, explosive contact in their "piece of the universe."