Exploring a deserted alien spaceship, Lieutenant Commander Data and Lieutenant Geordi La Forge suddenly find themselves transported light-years away—into the middle of a deadly conflict! While Captain Picard and the crew of the Enterprise search feverishly for the missing crewmen, Data and La Forge discover they are in a station almost identical to the one they were exploring, high in orbit around an Earth-type world. Years before, the occupants of that planet accidentally stumbled onto the ship and its advanced technology—and since then have used its weapons to keep the nations on the planet below disarmed, and at peace. Now their own arrival has precipitated a crisis on the station. Somehow, Data and La Forge must find a way to restore trust between the planet below and the station's guardians up above—before a final, destructive war breaks out!