Raven's creepy tantrum of crackling black energy leaves Dr. Light begging for mercy, and the Titans see a new side of Raven, her temper. But, when Cyborg and Beast Boy find a Mysterious Mirror in Raven's room, they're suddenly transported to a strange nightmare world that's somehow connected to Raven.

Dark ominous clouds blow in from the east, bringing Thunder and Lightning with them--two forces of nature made flesh in the form of costumed superteens. The stormy brothers aren't evil; they're just looking for a good time.

Starfire and Raven don't really "get each other." Star doesn't understand Raven's repression, and Raven can't deal with Starfire's emotional outbursts. But when The Puppet King imprisons Robin, Cyborg, and Beast Boy inside wooden puppets and takes control of the boys' bodies. The girls are going to have to understand each other -- if they want to survive.

A thief called Red X, who knows the Titans’ every weakness, shows up. Every time the Titans try to catch him, they are badly defeated. Meanwhile, Robin - who has been obsessed with capturing Slade - isolates himself more and more from the team.

The Titans awake to find themselves captured as prisoners of Mad Mod, a madcap bad guy in a psychedelic suit. Mad Mod has decided to teach the teens a lesson, creating a massive mind-bending school full of optical illusions and brain-washing hypno-screens. Will the Titans be "re-educated" and lose their minds in the process?

Ever since the Titans' final confrontation with Slade, Robin has been haunted by one question: Is Slade really gone? And after Cinderblock escapes from jail, Robin finally gets his answer when he sees Slade. Robin pursues Slade, fiercely determined to stop his nemesis once and for all.

The stars are aligned. The sun is in eclipse. All of Slade's labors are about to reach fruition -- and the Titans are about to face their greatest challenge ever. But is there really any hope of preventing the end of the world?

All seems lost for young heroes across the globe: they have been spread far and wide, their lines of communication have been severed, and one by one, the Brotherhood of Evil takes them down. But as The Brain claims his victory is assured, one brave hero manages to slip thorough the Brotherhood of Evil's grasp: Beast Boy.

Terra finds out that the Titans are not easily destroyed, when they come back and nearly defeat her. Slade sends Ternion (a combination of Overload, Plasmus, and Cinderblock) while he beats Terra up for running away. When the Titans see how sorry Terra is and the torture Slade is doing to her, will they forgive her? Or will they follow out with their plans and destroy her?

It's Raven's birthday, but she is far from wanting to celebrate. But before Robin can learn why, the Titans receive a distress call and go to check it out. When they get there, they are greeted by none other than Slade, back from the dead. But Slade seems to have new powers along with a strange red mark on his head and he has a message for Raven that he is going to deliver, no matter what.

While playing in the park Cyborg suddenly shuts down. After rebooting he tells the other Titans that his batteries are dying. During a battle with Mumbo, Cyborg's emergency batteries die and he is lost. The Titans believe Mumbo to have kidnapped him, but he has instead been found by a strange man called Fixit.

A mysterious new villain called Trident appears and starts stealing nuclear waste from ships. The Titans go to investigate and meet a new hero, Aqualad. This new hero causes Beast Boy to become very competitive.

Cyborg has finally finished his 'baby', the T-Car. But after a battle with Overload his car disappears. It successively ends up in the hands of two bad guys called Cash and Sammy, then Gizmo, and finally Overload, the last of which forces Cyborg to make a painful decision.

Terra returns with a vengeance, Meanwhile, Slade gives orders to Cinderblock, Overload, and Plasmus to launch a series of sinister strikes all over the city. Can our heroes stop the three villianous monsters, Slade, and Terra? Or will the Teen Titans be destroyed?

The day has finally come. Raven is destined to end the world on this day. Trigon will come by sunset. But not if the Titans have anything to say about it. They place Raven in a safe room while they take on an army of flame creatures and Slade who is determind to take Raven to the Trigon. But Raven knows the horrible truth. No matter what the Titans do, there is no escaping her destiny.

Robin, Starfire, Cyborg, and Beast Boy awake to a nightmare. Trigon has risen and he has ended the world. Every building is destroyed, and all life has been turned to stone. Due to one last gift of Raven's, the Titans have survived. Now, they must find a way to get Raven back, maybe she knows of a way to stop Trigon. But to do this, the Titans will have to accept help from their old enemy - Slade.

Starfire is trying to commemorate the Tamaranean holiday Blorthog, the festival of friendship, when Warp, a villain from the future, comes back in time to steal an antique. When Starfire charges at him, she finds herself stranded in the future and finds that much has changed for her friends ... and only for the worse.

Terra and Beast Boy are finally kicking up a notch when they go out on a date. But while they were out, someone let Slade's army into Titans Tower. But when Beast Boy and Terra just about kiss, Slade ruins the romance. Slade lets out the news that Terra is his apprentice, making for a very unhappy Beast Boy. Finally, he turns his back on Terra, letting her go with Slade.

Ever since Slade's return, the Titans have been searching high and low for answers, including looking for theories as to the 'S' mark on his forehead. However, Raven knows why he's back, and the Titans are about to discover the truth themselves after Slade launches another attack.

How did Robin meet Starfire? What was Beast Boy's first joke? Why did Cyborg build his Sonic Cannon? When did Raven first call the Titans her friends? Return to the very beginning and see how it all started - from the word ""GO!""

The final game has begun. While the Titans are spread out throughout the globe on one last mission, Brotherhood mastermind, the Brain, makes his move. Robin has a strategy of his own, but as all the villains begin taking down all the superheroes all at once, will it be enough to save his friends?

There's a new thief in town - Robin's former evil alter ego, Red X. Robin feels that this is all his fault, and must stop X from getting a dangerous powerful chemical known as synovium that will power him up. Robin stops at nothing to catch his former evil alter ego - but it turns out that there may be a even bigger villianious plot in the mists.

With Titans dispatched across the globe, members of the HIVE FIVE figure they have it made. Unfortunately their city-wide crime spree is cut short when a new hero in town spoils the fun. Handing him over to the BROTHERHOOD OF EVIL may score the Hive Five points, but actually catching this lightning-fast do-gooder is much harder than it seems.

The Titans spot a young girl being chased by a giant scorpion-like creature and prepare to rescue her, only to see that the girl possesses tremendous powers and was merely luring the scorpion into a trap. She reveals her name to be Terra, and she has the power to control the earth and all of its forms. However, she has a terrible secret, and Slade shows interest in her.

The Titans pick up a horror movie called Wicked Scary. After watching it, they are scared out of their wits, although Raven refuses to admit this to the others. During the night, strange things start to happen in the Tower.