Plot summary
Cinderblock breaks into a prison but is beaten there by the Titans, but a misstep in the "sonic boom" attack knocks the Titans out and allows for Cinderblock to escape and take a quarantined Plasmus with him. Robin and Cyborg argue about who messed up, causing Cyborg to quit. Slade unleashes Plasmus on the remaining four Titans. Cyborg later returns and assists the Titans in defeating Plasmus and Cinderblock. Villain(s): Slade, Cinderblock, Plasmus
Credits
Adapted from Wikipedia contributors, Teen Titans season 1. HTML formatting and reference markers removed.