With the help of a nefarious billionaire, the Joker and Harley Quinn
hatch a plan to lock up the Justice League for good. First they'll
kidnap The Flash and Huntress. Then they'll lure the Justice League's
most powerful members -- including Batman, Superman, and Wonder Woman --
into a trap beneath Arkham Asylum. Can the world's greatest team of
super heroes thwart the Joker and Harley before it's too late? Or will
this perilous pair doom them forever in a Justice League jailhouse?