When they arrived at the warehouse, Batman gave a silent hand gesture to Superman, who in turn nodded to Green Lantern.

In unison, the heroes gathered broke into the warehouse that Nightwing bought. 

Inside, it looked like a normal warehouse. Boxes and bins littered the ground, but nothing seemingly out of the ordinary. 

"Search around, specifically for hidden anything." Batman said. 

They split up, searching around. 

Suddenly, Batman huffed. There were scraps around a heavy looking box by the wall. But not as if someone was pushing to move it. 

Bruce struggled to move the box, but got it to move. 

Underneath, a trapdoor was hiding. 

"Here." Batman said, lifting the door up.

Underneath, there was a staircase leading down, but it wasn't lit up. 

"Okay, creepy bunker." Green Lantern frowned, using his ring to light up the staircase.  

Batman took the lead down, followed by a flying Green Lantern and Superman. 

They soon came across a hallway, white as snow, and lit up by recessed lighting. 

Several doors were on both sides of the hallway. 

"Anyone here?" Superman whispered. 

"Clark?!" Supergirl's voice came from one of the doors. 

"Dang, so Nightwing definitely did this." Tim said. 

Green Lantern went up to Supergirl's cell, looking at the locking mechanism. 

It was a biometrics lock on it. Only two ways to get through- hack or have the fingerprints. 

"Ah, ah, ah! Not so fast." The Cape's voice boomed around the hallway, but nowhere in sight. 

Suddenly, Green Lantern was hit so hard, that his head smashed against the wall, effectively knocking him out. 

"Dick, stop this." Bruce growled, getting into a defensive position. 

"Wrong again, old man." Suddenly, Red Robin was gone from the hallway. 

"He's using invisibility." Clark whispered to Bruce, tracking the cape. 

 "Uhm, definitely not Dick." Jason said, looking into one of the cells that has Dick unconscious on the bed. 

"Cape. Stop this now. You are covered in fear gas, we can help." Batman growled. 

"No, you can't help. You're the one in trouble, with all the crime fighting." Cape said, Superman was staring at one spot. 

Batman brought a baterang into his hand, hiding it from his opponent. 

At the same time, a piece of kryptonite came flying for Superman as Batman unleased the baterang heading to where Clark was looking.  

The kryptonite hit its target while the baterang didn't. 

 Except, it did embed into the wall and start releasing knockout gas. 

"Not today, Batsy." Cape said, voice echoing in the hall. 

Jason pulled a gun, holding it ready, but couldn't see the Cape. 

Batman threw a few paint pellets around the hallway. 

One of them hit its target. 

And that was enough for Jason.

He took the shot.