A mysterious terrorist organization has carried out several attacks against the Federation and Klingon Empire. Tensions are running high in a region already crippled by conflict. The perpetrators are tracked to the Lembatta Cluster, a mysterious region of space whose inhabitants, the Renao, regard the Alpha Quadrant's powers as little more than conquering tyrants. The Federation are desperate to prevent more bloodshed, and have sent their flagship, the USS Prometheus, into the Cluster to investigate the threat before all-consuming war breaks out.