A first contact mission in 2367 that went wrong when Commander Riker was injured while disguised on Malcor III, leading the planet's chancellor to ask the Federation to stay away.
First contact with the Malcorians is the subject of the Next Generation episode First Contact. The Malcorians are close to testing a warp drive, so the Federation has placed observers among them, and Riker is working on the surface under the name Rivas Jakara when he is hurt in a riot and taken to hospital, where his anatomy gives him away.
Picard and Troi hurry matters along by revealing themselves to the space scientist Mirasta Yale and then to Chancellor Avel Durken. Durken is open-minded, but his security minister Krola fears the visitors and stages his own shooting to make Riker look like a killer.
The scheme fails, yet Durken concludes that his people, who still believe they are the centre of the universe, are not ready. He delays the warp programme and asks the Enterprise to leave. Yale, who cannot bear to stay behind, departs with the ship.