Kid Flash causes trouble for the HIVE Five ("Lightspeed"), while Ding Dong Daddy steals Robin's greatest secret ("Revved Up"). After five seasons, the origin of the Teen Titans is revealed ("Go! "). Brain makes his move against the young heroes ("Calling All Titans"), and Beast Boy takes it upon himself to end Brain's quest for power once and for all ("Titans Together"). Then Teen Titans comes to a close with the possible return of Terra ("Things Change"). Also, a listener has a brilliant theory as to how the dead Titan might have returned from her stone imprisonment.