Batman: Europa #1 on sale November, 18.
“The story centers on Batman racing across Europe to find a cure to a mystery virus. And not only is Batman himself infected, but Joker is too. And the two enemies have to work together.
“They’re both infected by this virus, and they’ll both die if they don’t solve this mystery that takes them to these cities,” Azzarello explained. “Both their lives depend on it.
“So for Batman, it’s either work with the Joker or die,” he said. “Or conversely, if you don’t work with him, he’s going to die" ©
Newsarama.
P.S. “And it’s Joker, wearing a Robin costume" © Newsarama.