Batman / Superman #20
In "Worlds Burn!", Batman, Superman, Robin, Alanna, and El Diablo face their most overwhelming threat yet as Auteur.Io unleashes Etrigan and a horde of demons upon Superman's World of Tomorrow. With the fate of entire realities hanging in the balance, the heroes must push beyond their limits in a desperate bid to stop the onslaught. Written by Gene Luen Yang and brought to life by Ivan Reis, Danny Miki, Sabine Rich, and Saida Temofonte, with a cover by Ivan Reis and Danny Miki, this 2021 issue delivers high-stakes action and escalating tension in a story that redefines what it means to protect the multiverse.
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As Superman, Batman, Robin, Alanna, and El Diablo continue to foil his plans, Auteur.Io sends the Demon Etrigan and his demon horde to destroy Superman's World of Tomorrow, resulting in the heroes making a desperate attempt to stop him.
Plot details indexed by the Grand Comics Database (CC BY-SA).