Johnny Cage is a notorious star among his people in Earthrealm. Johnny Cage was considered a fraud of a warrior to his people, Johnny Cage entered the Mortal Kombat tournament to proove to the world that he is a great martial artist, and to also restore faith in his own spirit as a fighter.

Johnny Cage was summoned by the Thunder God known as Raiden to aid in the protection of Earthrealm against the threat of the Deadly Alliance. Johnny Cage volunteered to fight on behalf of Earthrealm along with his comrades that he gained on defending Earthrealm previous times. Johnny Cage wished to become the best of his kind and with the knowledge of the death of Liu Kang, Johnny Cage decided that he would use all of his skills to avenge his lost friend's death. Johnny Cage also needed a new story to tell once he returned back to Earthrealm.

During his quest in Outworld, Johnny Cage and his comrades journeyed towards Shang Tsung's palace. Johnny Cage witnessed his allies become defeated in battle while defending themselves against the Tarkata that ravaged those lands. Johnny Cage fought hard and managed to kill alot of Tarkata, but he himself was defeated in battle along with his comrades.

Onaga had witnessed Johnny Cage and his allies fighting potential and decided that he may use them to his advantage. Onaga revived Johnny Cage and his comrades to be his personal servents, Johnny Cage's mind was altered and blindly served his new lord Onaga, never to return to Earthrealm again. Onaga was to rule all of Outworld and when the oppurtunity came, he would conquer the rest of the realms.

It was to a better cause that Liu Kang was once again wandering the realms since his death at the hands of the Deadly Alliance. Liu Kang had journeyed into Outworld to rescue his fallen comrades and in his quest he discovered the nomadic warrior Ermac. Ermac decided to aid Liu Kang in rescuing his comrades from Onaga's control and together they paired together and ventured Outworld. Liu Kang and Ermac managed to find their way into Onaga's throne room where he nor his warriors were present. Liu Kang and Ermac found Johnny Cage and his comrades but under the possesion of Onaga, Johnny Cage and his comrades attacked Liu Kang and Ermac. Liu Kang was however succesful in freeing all of his comrades minds from Onaga's control and together they all escaped back to Earthrealm where they plotted their next move.

Johnny Cage relized that this was his second experience with death. Johnny Cage was more determined than ever to battle with Onaga now that he was well aware of the Deadly Alliance's defeat. Johnny Cage and his comrades who were also under Onaga's possesion learned of some of Onaga's history while sharing the same thoughts as him. When Johnny Cage recouperated from his journey on defeating the Deadly Alliance, he was once again ready to venture back into Outworld and do combat against Onaga and his army. Unfortunatley for him, his oppurtunity was crushed. While in Outworld, Onaga was defeated by the warrior known as Shujinko. Onaga was killed in battle and all of the six Kamidogu of the realms were destroyed, therefore closing all of the ancient portals that allowed travel to other realms. Johnny Cage was very disapointed with this fact and therefore he returned to Hollywood to continue with his acting career.

Two years have passed since Johnny Cage had last journeyed to Outworld and Johnny Cage was visited by his old comrade Liu Kang along with Kung Lao at his home in the estate that he owned in California. Liu Kang told Johnny Cage that their old mentor and guide Lord Raiden was corrupted with wicked thoughts that tainted his being. Liu Kang explained to Johnny Cage that it was up to them that they could restore Raiden back to his former self and protect themselves against a much bigger threat. Johnny Cage was told a tale of the existance of the six realms and that there was an almighty being who created all of the realms. If this being was to be awakened then their entire existance would be vanquished. Johnny Cage relized that this was the most important event he had ever faced in his entire life, and Johnny Cage voulenteered himself once again to protect Earthrealm.Liu Kang told Johnny Cage that the portals leading to other realms were mysteriously created by an unknown being, Liu Kang suspected Lord Raiden to be the one responsible for this event. Johnny Cage journeyed with both Liu Kang and Kung Lao around Earthrealm and helped gather the remaining warriors of Earthrealm who were skilled enough to handle the task at hand. Johnny Cage used his funds from the movies he made to make transportation quicker for himself and his allies to gather everyone together.

Johnny Cage had gathered his old comrades whom he had not seen in two years and he was greeted by new warriors whom he had not seen before. Johnny Cage witnessed the summoning of the Fujin the God Of Wind. The Elder gods relized the task that Johnny Cage and his comrades were to go against and they would give their assistance in anyway they could. Johnny Cage was told that he would not be journeying with all of his comrades. Raiden's presense was unknown and he could be in any of the five realms that were seperate from Earthrealm. Johnny Cage was put in a group that was led by his old comrade Sonya Blade, together they would travel to the realm of Seido and look for the tainted Thunder God there.