Star Trek: Civilizations is a fan fiction series jointly written by Tigerstyle and Hyperion. The stories are set during the late 23rd century and focus on the crew of two ships: the Avenger-class USS Valiant and the Enterprise II-class USS Hyperion. Posted to Star Station Inflexible, a Federation outpost located near the Klingon Neutral Zone, these men and women must confront challenges both mundane and extraordinary as the galactic peace crumbles around them.