Dick was in his Nightwing suit, riding on his motorcycle through Gotham City. "Nightwing to Oracle," he said, "do you know where Quinn is?" Oracle said on the radio, "I don't. Robin's talking to Commissioner Yindel about her whereabouts. If we know her and Joker, we know the two of them loved old abandoned warehouses as their hideouts." Nightwing stopped at a red light and asked, "any abandoned warehouses that were recently broken into?" Oracle said on the radio said, "hmmm... Let me see..." The traffic light turned green, and Nightwing continued to drive on his motorcycle.

"I found out something." Oracle said on the radio, "an abandoned candy factory had been purchased before Joker's death. It was known as Jolly Jack. It's a wild guess,  but I'm certain that Quinn might be hiding there. I'm sending you the coordinates right now." A few seconds later, Nightwing was given information to where the old abandoned Jolly Jack Factory was. It was on Eisner Street, a few blocks south. "Thanks," said Nightwing as he drove down south. A few blocks later, he found an old abandoned Candy Factory with a giant clown head that had rotting teeth. Nightwing parked his motorcycle and took off his helmet. He then said on his earpiece communicator, "Nightwing to Oracle. I am at Jolly Jack. I'm now on the hunt for Quinn. If there's any trouble, I'll call for backup." He then walked in as Oracle said, "understood. I talked to Tim of your whereabouts. Over." Nightwing looked around this barren place. But then he heard some sickly coughing. He followed the source of the sound. There he saw Harley Quinn hacking and wheezing. She was wearing the same clothes from the last time he confronted her. (Basically her Arkham Knight costume.) She was laying on her side, and she looked weaker and sicker than the last time he saw her.

Nightwing walked up to her and asked, "Harley? Are you okay? Are you alive?" Harley glared at Nightwing and hoarsely asked, "What the hell... *gag* do you want... *wheeze* Bird-brain?" She closed her eyes and tried to relax. Her voice sounded like the life had been choked out of her. "I'll take that as a yes..." Nightwing said, "listen to me Harley... You've been infected with The Joker's semen. It's been mutated with the Titan formula, and it's been slowly killing you." Harley crawled to a chair and said sarcastically, "oh... *cough!* you don't say..." Nightwing got out the antidote and said, "here, take this. It should save you."

"I d..don’t want your help... l..lemme be with m..my Mistah J..." Harley stubbornly said, shivering. Nightwing opened the syringe and said, "I'm sorry Quinn, you leave me no choice... this is going to hurt a little." He then jammed the needle in her arm, and inserted the cure into her. Harley yelled in pain, and tried to punch Nightwing, but was too groggy to do so. Her coughing was starting to lessen. "The antidote should clean your body in an hour," said Nightwing, "you need rest. You're slow and groggie. Try not to strain yourself." Harley growled, "I'm gonna... Kill you..." She was weak and tired. "Gee, you're welcome..." Nightwing sarcastically said, then he said on his earpiece communicator, "Nightwing to Oracle, Quinn is officially cured from the Titan Formula. Are the police coming?" Oracle then said on the radio, "that's a bit of a problem Dick, we found out something regarding Harley..."