Terra is back, having mastered her powers while she’s been away. She says she is now ready to become a Teen Titan. The others still aren’t so sure she is ready after what happened the last time they saw her, they decide to let her prove herself and not a moment to soon. Slade is back and his new worm like robots are causing earthquakes around the city, the Titans go to investigate the happenings underground and during the mission Terra and Raven must learn to work together if they want to stop Slade and save Titans Tower.