The search for Skywalker
"We have thousands of probe droids searching the galaxy. I want proof, not leads!"
―Admiral Kendel Ozzel[src]
It is now three years after the events of A New Hope. The Rebel Alliance has been forced to flee its base on Yavin 4 and establish a new one on the ice planet of Hoth.
An Imperial Star Destroyer dispatched by the Sith Lord Darth Vader, continuing his quest for Luke Skywalker, launches thousands of probe droids across the galaxy, one of which lands on Hoth and begins its survey of the planet. Luke Skywalker, on patrol astride his tauntaun, discovers the probe, which he mistakes for a meteorite. After reporting to comrade Han Solo that he'll investigate the site, Luke is knocked unconscious by a deadly wampa.
When Luke fails to report in at Echo Base, Han Solo goes out on his tauntaun to search for him in an encroaching storm. Upon waking up, Luke finds himself hanging upside down in a cave; his eyes opening to the sight of a wampa eating his tauntaun. Using the Force, Luke is able to pull his lightsaber towards himself. After he ignites it, he cuts himself free and cuts off the attacking wampa's arm, running out of the cave and escaping into the cold night of Hoth.
Luke tries to make his way to Echo Base on foot, but he finds himself lost in the blizzard and collapses in the snow. Suddenly, he sees the Force spirit of Obi-Wan Kenobi appear before him. Ben tells Luke to go to Dagobah to undergo training under Yoda, a Jedi Grand Master. After the spirit disappears, Han arrives to find an almost unconscious Luke, who is mumbling indistinctly about Ben, Yoda and Dagobah. At this point, the tauntaun that Han was riding on collapses in the extreme cold. To keep Luke warm during the blizzard, Han uses Luke's lightsaber to cut open the dead tauntaun and places Luke in it. Han then sets about erecting a shelter that he and Luke will stay in during the night. They are forced to stay out during the night as the aircraft (snowspeeders) that the Rebels use for atmospheric flight had not yet been adapted for the extremely low temperatures of the Hoth night and are therefore unable to mount a rescue operation to retrieve Han and Luke.
The next morning, Rebel Pilots flying the snowspeeders set out from Echo Base to search for the missing men. Zev Senesca, one of the pilots in Rogue Group, makes contact with Han over comlink and the pair are rescued. When they are taken back to base, Luke is put in a bacta tank for healing under the care of medical droid, 2-1B.
Princess Leia Organa tries to urge Han to stay with the rebels, and when Han assumes it is because she has feelings for him, Leia loses her temper and calls him a "stuck-up, half-witted, scruffy-looking nerf herder."
Meanwhile, the probe droid has spotted signs that indicate Hoth is occupied and sends a signal to the Imperial fleet, shortly before being destroyed by Han Solo and Chewbacca. Aboard the Executor, Admiral Kendel Ozzel dismisses the information as evidence of smugglers, nothing more. However, Darth Vader knows better and orders the fleet to Hoth. General Rieekan, realizing the Empire is probably aware of their location, orders the evacuation of Echo Base to begin.
The Battle of Hoth
Atathoth
AT-ATs on Hoth.
Darth Vader and the Imperial forces set course for the Hoth system to set up the attack. The rebels load whatever equipment they can onto transports and plan a rear-guard action to secure their escape. Luke, now fully recovered from the Wampa attack and subsequent exposure, says farewell to Chewbacca and Solo, who have decided to leave the Alliance to resolve their debt to Jabba the Hutt. As the Imperial forces enter the Hoth system, General Rieekan orders full power to the energy shield that is protecting the base from orbital bombardment.
Aboard the Executor, General Maximillian Veers notifies Vader that Admiral Ozzel has emerged from lightspeed too close to Hoth. Ozzel intended to catch the Rebels unaware before they could set up their defenses. However, Vader realizes that the Rebels have been alerted to the fleet's arrival. Via video communication, Vader Force chokes Ozzel to death for his incompetence, then appoints Captain Firmus Piett the new Admiral on the spot. As Vader previously ordered, the Imperial ground forces, commanded by General Veers, land outside the Rebels' shield and march overland to destroy the power generator.
