In 2369, when Lurin attempted to capture and sell a Galaxy-class starship, Morta, along with Berik and several other Ferengi, boarded the USS Enterprise-D under force. Morta and Berik transported onto the bridge where Morta wounded Lieutenant Worf with an energy weapon.
After the capture of the Enterprise-D had been completed, Lurin, threatening to execute Enterprise-D's civilian personnel, ordered Commander William T. Riker to release his lockout of the main computer and instruct Morta on its use. Riker successfully stalled for time by exploiting Morta's dim-wittedness and confusing him with gibberish terms until Captain Picard could effect a rescue of the bridge. (TNG: "Rascals")