D'rinba IV was a world in the Mid Rim that was home to a large Rebel supply base targeted by Darth Vader during the relocation of the Death Star II to Endor. When the D'rinba Rebels learned of Vader's intent, Rebel Alliance agent Corwin Shelvay organized a team consisting of Kyle Katarn, Shira Brie, Erling Tredway, and up to two other agents to disable the superlaser.