The Enterprise discovers a badly damaged ship. Instead of taking all the time necessary to find survivors, Picard and Geordi test out Geordi's new VISOR transmitter. A nice idea, complete with fey 80s incidental music, but hardly the appropriate time TO use it.
Of course, they find the Klingons and get aboard the Enterprise. It transpires they are renegades; the Klingons ask Worf all sorts of questions about the ship and how it works -- Worf readily answers, despite them already having discussed issues deemed treasonous. It's amazing Worf got promoted to SECURITY CHIEF given this incident!
The 'divided loyalty' subplot ultimately fails because of this cheesy dialogue; not to mention the saccharine ending where the commander of the Klingon ship sent to capture the renegades offers Worf a tour of duty on his ship once Worf's tour of duty on the enterprise is completed. (this is before the Son of Mogh subplot that made Worf stand out as a character in later seasons.)
Despite the cheese and lack of vision, this episode still hangs together: When the renegades break free of their cell, that's when the episode properly begins. It concludes with an excellent dénouement between Worf and the renegade leader. The camerawork for these scenes is excellent too.
One other thing - the "Klingon death scream" was quite the novelty and is very effective. Pity it wasn't kept...