Talarian freighter hijacked by renegade Klingons, which the Enterprise-D found badly damaged in the Neutral Zone in Heart of Glory.
The Talarian freighter answered a distress call in the Neutral Zone in Heart of Glory, and the Enterprise-D found it crippled with three Klingons aboard: Korris, Konmel and Kunivas. They were beamed to safety moments before the freighter exploded.
The Klingons claimed they had been passengers who fought off a Ferengi attack, but Worf learned that they had actually commandeered the freighter themselves. They were renegades seeking the glory of battle, and their later attempt to seize the Enterprise ended with Worf killing Korris.