Star Trek VI, the Undiscovered Country is a science fiction film not set within the Solar System which was released in 1991 and is directed by Nicholas Meyer.
The Klingons are forced to make Peace with the Federation because of an accident on Praxis, a moon of Kronos, their home world. Without a peace pact, all Klingon life will go. During treaty talks, the Klingon Chancellor Gorkon is assassinated as his ship is blown up. All evidence points to the fact that the missile came from the Enterprise. Whilst Kirk is labouring in a prison camp, the rest of the crew attempt to solve the mystery.