Kami, the master of the Komodo Dojo, recruits a Junior Dragon named Michael and uses him to attack the Shadow Dojo and take revenge on the Shadow Master. However, when Michael is captured, Kami must put aside her desire for vengeance by teaming up with the Dragons to free Michael.

The Shadow Master begins manufacturing a steroid-like drug called RPM from his new underground factory. When he contaminates Billy with the drug, Jimmy and Daj must free Billy and help him break his addiction.

The Shadow Master revives an ancient beast known as the Shadowmonster, which centuries ago defeated Dao Lung's master, Chen Long. To his surprise, Dao Lung then discovers his master sleeping in a cave, alive and well. The Dragon Masters then awaken the ancient Dragon Warrior to help fight against the Shadowmonster once more.

The Shadow Khan revives his ancient group of Terror Warriors and begins attacking Metro City. Finding their current weapons and armor useless against Khan and his warriors, the Dragons turn to an old friend, Kami, to craft new armor which will help them stop the Shadow Khan and his minions

Countdown betrays the Shadow Master after being chastised for bumbling a mission. With help from Countdown, the Shadow Khan hypnotizes Daj and causes him to throw the Dragon Claws in the Black Flame, freeing Khan from his prison. After dominating the Shadow Master and taking control of his Shadow Warriors, Khan launches an attack on the Dragon Dojo.

Under threat from the Shadow Master, the Shadow Khan rebuilds the Shadow Dojo and begins terrorizing Metro City with illusions representing people's worst fears. The Double Dragons must retrieve the Dragon Claws and stop the Shadow Khan with help from Dr. Linquist and his son

The Shadow Master discovers a powerful Dragon artifact called the Eye of the Dragon which grants its holder the power of sight. Jimmy gets hold of the artifact, and it gives him incredible powers. However, it also begins possessing him. Jimmy is forced to choose between the artifact and his brother.

The Shadow Master knocks Billy and Jimmy into a hidden section of the Shadow Dojo called the Abyss and imprisons the Dragon Warriors in his Shadow Mural. Inside the Abyss, Billy and Jimmy meet their mother, Marika, who has been trapped there since the brothers were babies. Marika and her sons must escape from the Abyss so they can free the Dragon Warriors and stop the Shadow Master from controlling Metro City.

Billy becomes the new Dragon Master of the Dragon Dojo and meets his twin brother, Jimmy. When Jimmy goes missing, Billy calls upon his Dragon birthmark to lead him to his brother. Billy then faces off against the Shadow Boss and discovers that he is none other than Jimmy.

The Shadow Master begins distributing a drug called Oblivion so that he can turn Metro City's population into mindless zombies. The Lee brothers then meet a retired special forces member named Colonel McReady after he is run off the road by a couple of drugged-up drivers, and together, the three team up to stop the Shadow Master and destroy his drug factory

The Shadow Master begins operating an illegal fighting ring in a secluded area of Metro City. Sickle then forces a homeless martial artist named Vortex to fight in the tournament by holding a group of homeless children hostage. Billy and Jimmy must rescue the children and help Vortex before the Shadow Master can get rid of them.

The Shadow Master appears for the first time and orders Jimmy to retrieve his twin brother and the Dragon Sword. Jimmy kidnaps Billy, but fails to retrieve his sword. The Shadow Master then attempts to get rid of both the brothers, but the brothers escape and Jimmy changes sides, joining Billy. Billy and Jimmy become the Double Dragons and face off against the Shadow Master at the EMF plant.

Billy and Jimmy meet a powerful chi master named Su Lien and her sumo wrestler student named Tsunami. Su Lien is then duped into helping the Shadow Master reform his evil ways. When the Shadow Master hooks Su Lien up to a virtual reality machine so that he can drain her mind and steal her powers, Tsunami and the Lee brothers team up to rescue her.

Billy loses his memory when he is knocked into an ultra-magnetic field, and the Shadow Master tells Billy that he is his son. Billy then becomes the new Shadow Boss, and Jimmy and Marian must work together to bring the real Billy back before he loses his memory forever. Read full

The Shadow Master uses holograms to frame the Double Dragons for various crimes, and the Metro City police department dispatches a robotic officer named CLU to arrest the Dragons. The Dragons must prove their innocence while saving Metro City from a malfunctioning CLU.

Ice Pick invents a new video game-like virtual reality system which allows him to blast people and objects in the real world. When he then manages to digitize the Double Dragons into the video game, a young, video game-obsessed boy named Danny must use his skills to help the Lee brothers escape from the virtual reality machine and retrieve the Dragon Claws.