Story Line: Tara Markov is a girl who has power over earth and stone; she is also more than she seems. Is the newest Teen Titan an ally or a threat? And what are the mercenary Deathstroke's plans for the Titans?
Movie Story: Robin is sent by Batman to work with the Teen Titans after his volatile behavior botches up a Justice League mission. The Titans must then step up to face Trigon after he possesses the League and threatens to conquer the world.