School's back in session at the HIVE Academy, and Gizmo, Jinx and Mammoth are up to something. To find out what, the Titans send Cyborg on a daring undercover mission to infiltrate the Academy.
When the Titans track down the culprit in a string of robberies, the teen heroes are shocked to find themselves facing a foe they thought they'd never see again: Robin's evil alter ego, the Red X.
The Teen Titans take a road trip to Starfire's home planet, Tamaran. But this is no ordinary visit: The Grand Ruler of Tamaran has arranged for Starfire to get married! The Titans try to adapt to the strange ways of Starfire's home world.
When Beast Boy mistakes Cyborg's system recharger for a video game, he accidentally infects it with a nasty computer virus. The virus quickly spreads to Cyborg himself causing the half-teen/half-machine to go haywire.
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.
There's no one else quite like Raven: dark, somber and undeniably creepy. Even with four friends around her, Raven still manages to feel alone in Titans' Tower.
The Titans' Fourth of July festivities are interrupted when Mad Mod comes to the party uninvited, declaring the American Revolution a hoax and reclaiming the city for jolly old England. To make matters worse, old Mad Mod steals Robin's youth.
Brother Blood is back. And this time, it's personal. Cyborg learns that Blood stole his blueprints--and the villain is using Cy's technology to create a doomsday device. Can Cyborg take charge of the team and lead a mission to stop his archenemy?
When Beast Boy begins turning into an angry, aggressive Man Beast against his will, the Titans must try to save themselves from their savage friend.
Starfire adopts a weird mutant silkworm named Silkie as a pet. But when she feeds him some alien food from Tamaran, Silkie has an unexpected--and monstrous--growth spurt. Can Starfire still keep her beloved worm?
The Amazing Mumbo is up to his old tricks. And when the Titans try to stop the madcap magician in mid-performance, Mumbo pulls a fast maneuver.
In part one of the two-part finale, Cyborg has a final showdown with Brother Blood, and a new branch of the Titans team is created.
The final battle continues between Cyborg and Brother Blood as well as the creation of a new branch of Titans.