Batman and Nightwing are forced to team with the Joker's sometimes-girlfriend Harley Quinn to stop a global threat brought about by Poison Ivy and Jason Woodrue, the Floronic Man.
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?
Robin is sent 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.
The Incredible Hulk, ejected from Earth in a spaceship, crash-lands on a planet ruled by a tyrant, who forces him to fight in a coliseum against other powerful creatures. The Hulk reluctantly befriends the combatants on his team.