context: Once every generation, there is an inter-dimensional martial arts tournament known as Mortal Kombat, designed by the Elder Gods to limit invasions between the realms of the universe. If the realm of Outworld wins Mortal Kombat ten consecutive times, its Emperor Shao Kahn (voiced by Frank Welker) will be able to invade and conquer the Earth realm. They have already won nine; so this will be their tenth tournament.
  The Shaolin warrior Liu Kang (Robin Shou) and his comrades, Hollywood movie star Johnny Cage (Linden Ashby) and U.S. Special Forces officer Sonya Blade (Bridgette Wilson), were handpicked by Raiden (Christopher Lambert), the god of lightning and Earthrealm's defender, to overcome their powerful adversaries in order to prevent Outworld from winning their tenth straight Mortal Kombat tournament. Each of the three has his or her own reason for competing: Liu Kang seeks revenge against tournament host Shang Tsung (Cary-Hiroyuki Tagawa) for killing his brother Chan (Steven Ho); Sonya also has vengeance on her mind, pursuing crime lord Kano (Trevor Goddard) who killed her partner; Johnny Cage, having been branded as a fake by the media, seeks to prove otherwise to the world.At Shang Tsung's island, Liu Kang is attracted to Princess Kitana (Talisa Soto), Shao Kahn's adopted daughter; a wary Shang Tsung orders the creature Reptile (Keith Cooke) to keep a close eye on her. Liu defeats his first opponent, and Sonya gets her revenge on Kano. Johnny Cage encounters the demonic ninja Scorpion (Chris Casamassa), who teleports Cage to his lair in the Netherealm; there the two battle viciously, with Cage the eventual victor. Liu Kang engages in a brief duel with Kitana, who secretly offers him advice for his next battle ("Use the element which brings life"). Liu's next opponent is the ninja Sub-Zero (François Petit), who's defense seems impregnable because of his freezing abilities, until Liu Kang recalls Kitana's advice and turns the tables.
  Prince Goro (voiced by Kevin Michael Richardson), a huge, four-armed Shokan warrior enters the tournament and mercilessly crushes every opponent he faces. One of Johnny Cage's friends, Art Lean (Kenneth Edwards) goes up against Goro as well and is defeated, along with having his soul taken by Shang Tsung. Cage comes to Tsang to request a fight with Goro. The sorceror accepts on the condition that he be allowed to challenge any opponent of his choosing, any time and anywhere he chooses. Raiden tries to intervene but the conditions are accepted. Cage faces Goro and uses guile and the element of surprise to defeat the defending champion. Now desperate, Shang Tsung then takes Sonya hostage, invoking his privilege to challenge any opponent of his choosing, and takes her to Outworld. Knowing that his powers are ineffective in Outworld and that Sonya cannot defeat Shang Tsung herself, Raiden sends Johnny Cage and Liu Kang into Outworld to rescue Sonya and challenge Shang Tsung. In Outworld, Liu Kang battles Reptile and soundly defeats him after having absorbed many blows from the creature and becoming enraged. Kitana meets up with Johnny Cage and Liu Kang afterwards; after telling the pair about Outworld's origins, as well as her own, she allies with them as they make their way to the castle where Sonya is being held.Inside the castle tower, Shang Tsung challenges Sonya to fight him, knowing full well that her refusal to accept will result in Earthrealm forfeiting Mortal Kombat. All seems lost for Earthrealm until the three Outworld monks inside the tower reveal themselves to be Kitana, Liu Kang and Johnny Cage. Kitana berates Shang Tsung for his treachery to the Emperor as Sonya is set free. Shang Tsung challenges Johnny Cage, but Liu Kang demands to fight Shang Tsung. During the lengthy battle, Liu Kang faces not only Shang Tsung, but the souls that Shang Tsung had forcibly taken in past Mortal Kombat tournaments, and the image of his brother, Chan (actually a transformed Shang Tsung intending to lure Liu Kang to his death). Liu Kang rises above the challenges and takes on Shang Tsung with renewed determination and ultimately fires an energy bolt at Shang Tsung, knocking him from the battle platform and impaling him on a row of spikes below, killing him. Shang Tsung's death releases all the captive souls, including Chan's. Before ascending to the afterlife, Chan tells Liu that he will remain with him in spirit until they are once again reunited.The warriors return to Earthrealm, where a victory celebration is taking place at the Shaolin temple. The jubilation abruptly stops, however, when Shao Kahn's giant figure suddenly appears in the skies. When the Emperor declares that he has come for everyone's souls, Raiden exclaims the final line of the movie, "I don't think so!" as the warriors take up fighting stances to defend themselves.
question: Who defeats Sub-Zero?
answer: Liu Kang