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.

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 in the Arctic Circle, the Teen Titans once again take on Dr. Light. And when an accident sends the Titans through the ice, they discover a new exotic Underworld --and two new superheroes, Kole and her caveman sidekick Gnarrk.