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.

Metro City passes a law banning hand weapons, and the Shadow Master takes advantage of the situation by illegally selling portable blasters. When a Junior Dragon's sister is injured in a drive-by shooting involving the illegally sold weapons, the Dragons work on shutting down the Shadow Master's weapon factory.

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 begins using a virtual reality system to steal computer data from around the world. When he kidnaps Kona's date, who is secretly an undercover Interpol agent, the Dragons resort to a jailed computer hacker named Megabyte to beat the Shadow Master at his own game.

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.

A one-armed mechanic and former police officer named Mike Pollard is duped into making new attack vehicles for the Shadow Master. When Mike realizes what he has done, he builds an attack car for the Double Dragons and helps them stop the Shadow Master

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.

The Shadow Master once again uses a virtual reality system, this time to absorb people's minds and become the smartest man alive. Billy, Jimmy and Kona must once again team up with Megabyte and Sashiko to stop the Shadow Master and free the imprisoned minds.

When the Shadow Master begins enslaving an underground city of mutants in his factory, the Double Dragons decide to rescue the workers with the help of a mutant named Daj.

Dr. Linquist discovers an ancient Dragon Sword inhabited by a spirit known as Dao Lung. When the Shadow Master blasts the sword, deforming it, Vortex attaches it to the Dragon Copter, inadvertently allowing Dao Lung to act as an auto pilot. Dao Lung then helps the Dragons defeat the Shadow Warriors.