Original sentence: All transmissions from the damaged ship abruptly cease, and three Klingon battlecruisers appear, indicating the distress call was merely a ploy to trap the Enterprise.Defying the treaty between the Federation and the Klingon empire, Saavik orders the Enterprise to cross the Neutral Zone into Klingon space to rescue the survivors on the freighter.Suddenly, a hidden door in the bridge opens revealing that this "attack" was actually a training exercise simulation known as the "Kobayashi Maru"; a no-win situation designed to test the character of Starfleet officers.The Klingons attack and the Enterprise is critically damaged, with Saavik finally calling for all hands to abandon ship.The vessel is patrolling the Neutral Zone along the border with the Klingon empire when it receives a distress call from a Federation freighter which has struck a mine, lost power and drifted into Klingon space
Edited sentence: The Enterprise is attacked by Klingon cruisers and critically damaged.The vessel is on a rescue mission to save the crew of a damaged ship in the Neutral Zone along the border with Klingon space.This "attack" is revealed to be a training exercise known as the "Kobayashi Maru"; a no-win situation designed to test the character of Starfleet officers