Rha'darus is a Klingon protectorate inhabited by a humanoid species.
In the mid-22nd century, Rha'darus was annexed by the Klingons, who offered its inhabitants the benefits of being part of their empire. However, they abandoned the planet once they had stripped it of resources, leaving its people short on food and fuel.
A few years later in 2153, 54 refugees attempted to flee the planet. They were branded as "rebels" and pursued by the Klingon cruiser IKS Bortas, under Duras' command. (ENT: "Judgment")