Apprentice: Part 1 (S01E12)

"Who is Slade? And what is he planning?" The questions that have been keeping Robin awake at night are about to be answered. Slade contacts the Teen Titans and unveils his master plan: the Chronoton Detonator, a sinister-looking high-tech device that has the ability to stop time... forever. The Titans embark on a mad hunt to find the Detonator before it freeze-frames the entire city. But furious Robin is so intent on foiling Slade's plot that his anger is taking control. As Robin mercilessly destroys Robot commandos and threatens an innocent civilian for information, the Titans begin to worry that stopping Slade might mean losing Robin. And ultimately, that's exactly what happens. Slade's Chronoton Detonator is a fake, a sophisticated decoy to lure the Titans away from Robin and infuse their bodies with nanoscopic probes. Unknown to the Titans, Slade now has the ability to destroy Robin's friends from the inside out. And the only way for Robin to stop him is to serve him. Slade wants Robin to become his apprentice. To save his friends, Robin has no choice and agrees. (iTunes)