USS Enterprise (NCC-1701 alternate reality)/Service history/Five-year mission/Final voyage

Soon after docking at Yorktown, the Enterprise was ordered to traverse the Necro Cloud to rescue Kalara's crew, allegedly stranded on the planet Altamid. Despite the navigational difficulties presented by the cloud, the Enterprise was equipped with the most advanced navigational sensors and emerged from the nebula in orbit of Altamid–immediately coming under attack by Swarm ships commanded by the tyrant Krall.
The Enterprise was unable to handle this style of attack, the ship's phasers having minimal to no effect against the swarm, the photon torpedoes proving to be ineffective, and the shields unable to identify the assaulting ships as threats, leaving them open to attack. 
The first assault destroyed the Enterprises phasers and main deflector dish and, as the ship attempted to warp back to the nebula, the swarm severed its warp nacelles. The ship was then boarded by Krall's drone soldiers and his henchman Manas, searching the ship for an artifact known as the Abronath and killing many Enterprise crew members.
As Lieutenant Sulu attempted to pilot the Enterprise away from Altamid at impulse speed, Krall ordered yet another assault on the ship, this time severing the primary hull from the secondary hull. With the Enterprise critically damaged, Captain Kirk ordered all hands to evacuate and the ship's escape pods were launched. However, Krall's ships captured the pods and carried them to the surface of Altamid.
The remains of the secondary hull drawing power from the impulse engines prevented the saucer from escaping until Lieutenant Uhura successfully separated the ship. However, the Enterprise had fallen into the planet's gravity well and even with impulse engines restored, could not escape. With the Abronath safely hidden away, Kirk ordered the last of his crew to man their Kelvin pods and abandon ship. The primary hull then fell out of orbit and entered Altamid's atmosphere, crash-landing to a stop at an angle.
With the crew scattered on Altamid, Kirk decided to return to the wreckage of the Enterprise and attempt to use her scanning systems to locate the crew. Kirk, Chekov, and Kalara boarded the ship through a hole in the hull and returned to the ruined bridge, where Chekov was able to restore power to the engineering console and scanning systems. Kirk took Kalara to supposedly retrieve the Abronath, at which point Kalara called Krall to report. Unknown to Kalara, Kirk suspected the double-cross and had Chekov use the Enterprises scanners to track Kalara's call back to Krall's base.
After the deception was revealed, Kalara and a few of Krall's drones chased Kirk and Chekov through the wreckage of the Enterprise, ultimately cornering them against one of the thrusters. Discovering the ship's thrusters to still be primed, Kirk used a phaser blast to ignite them, causing the Enterprise to flip over. 
As the ship flipped, Kirk and Chekov were able to use the distraction to escape by shooting out the bridge window and sliding down the saucer. The saucer flipped upside down and crashed to the forest below, killing Kalara, who was underneath it. Following the flip, the wrecked saucer was left upside down on the forest floor of Altamid, burning.
After Kalara's death, Krall's men searched the wreckage of the saucer for the Abronath but were unable to locate it. They retrieved the ship's logs while aboard the information in which inspired Krall to threaten Sulu to find the Abronath. The Enterprise crew, once reunited, repaired the to escape and chase Krall, abandoning the wreckage of the Enterprise on Altamid.
After Krall's defeat, the surviving members of the Enterprise crew made a toast to their fallen ship and were later reassigned to a new starship, the , and continued their mission of exploration. ()