The Caped Crusader and the Men From U.N.C.L.E. are on to the next big THRUSH operation—a heist in Europe. But the secret organization has a chilly new operative on this case: none other than the icy Mr. Freeze, who is assisted by that deadly songbird known as The Siren. And then the new, secret head of THRUSH is revealed. All this and Batgirl too!