(At Neo Beacon Academy, the heroes are seen discussing plans to defeat the Society of Darkness)

Batman: It looks like the Society of Darkness is making their move. We better make ours.

Neo: I have an idea. Maybe we should try some sneaking.

Mercy: Sounds like a good plan. But where should we start?

X: This is no big deal. Douglas is piloting a drone which allows him to have information about this society's activities.

(X shows a panel, revealing Roman Torchwick, Mercury Black and some other villains at Injustice Universe's Slaughter Swamp)

Harley Quinn: I've heard about this place. It's full of insects.

Batman: Maybe Scarecrow is planning something with the toxins he guarded in there.

Ozpin: Scarecrow? Toxins?

Cinder: I have a plan. I can lead a team composed of former criminals and heroes.

Merida: We are going with you.

Green Arrow: I'm going too.

Nora: I'm ready to break some legs.

Leon: I'm on it. (to Claire) Claire?

Claire: I'm going.

Finn: Adventure Time!!

(At Slaughter Swamp, the team is seen watching Roman discussing with Deadshot)

Deadshot: Can your boys go faster?

Roman: What's wrong?

Shadow: (comes in) We just don't need to have our heads blown away because of your slow boys.

Roman: Very funny, tin can!

Shadow: WHAT DID YOU CALL ME?

(Roman and Shadow start fighting)

Neo: This is our chance.

(Mercy notices her brother's approach and has a clash with him)

Mercury: It's been a long time, sister. Or should I say... Traitor?

(Poison Ivy comes in)

Poison Ivy: So you are the girls who betrayed your own master? That's a shame.

Harley Quinn: Ivy? Why?

Poison Ivy: All I am doing is for the green. If I need to break our friendship, Harley... So be it?

Emerald: You should know what are Salem's true intentions!

Poison Ivy: Salem will keep her promise, or she will be my next victim.

(Then the other villains come in)

Charmcaster: Prepare to fight, my friends.

Nora: Time to break some legs!

(The fight starts, Mercy resumes her clash with her brother. Harley Quinn fights her former friend. Charmcaster faces Rojo and the rest of the heroes face the rest of the villains. Mercy notices that her brother is holding back and leaves herself to be hit by him, only to notice that his kicks didn't cause any pain on her)

Mercy: You are...holding back?

Mercury: Of course I am, sister. I am an infiltrated member.

Cinder: I see...

(Then Harley Quinn defeats Poison Ivy as Mercury Black approaches her)

Mercury: I'm sorry...

Poison Ivy: For what?

Mercury: For...this!!

(Mercury knocks Poison Ivy by kicking her face.)

Harley Quinn: So you still care for that girl? (points at Emerald)

Mercury: Of course I do! And the info that Douglas guy sent to you... I gave it to them so you could come here.

Harley Quinn: I see...

(Then some fear toxins surrounds the duo as Scarecrow comes in)

Scarecrow: Face your fears, traitor!

Mercury: My pleasure.

(Mercury kicks Scarecrow as Harley Quinn approaches him)

Harley Quinn: Is that all you got, potato head?

Scarecrow: Hmm...you got high tolerance. But everyone has something to fear.

(Harley Quinn and Mercury Black fight Scarecrow. They use their high tolerance to the toxins at their favor and easily outclass Scarecrow.)

(Meanwhile Neo fights Roman)

Roman: What's wrong, ice cream? Not happy to see me?

(Then Neo shoots Roman's legs and knocks him out)

Neo: Not anymore, Roman. And you lost the right to call me like that? This right belongs to Kevin now!

(Harley Quinn falls asleep then wakes up seeing someone she knew very well)

????: Boo. Hahaha Hahaha!!

Harley Quinn: P-p-p-pudding?

The Joker: Look at you, Harley. Cosplaying as a hero... But you can still hear it, right?

Harley Quinn: Hear what?

The Joker: The real you. The one who beats the crap out of your friends and laughs.

(Batman appears tied up. But instead of killing him, Harley Quinn hits The Joker)

Harley Quinn: No. The old Harley Quinn who got obsessed by you is long gone!

(Harley Quinn knows that The Joker is just an illusion from Scarecrow. Then she decides to face and eventually overcome her fears by defeating him)

Harley Quinn: I should never have allied with you.

(Then Harley Quinn wakes up as the heroes see Swamp Thing)

Lie Ren: Uh-Oh...

Swamp Thing: Who dares to disturb the green?

Cinder: Roman and his henchmen do.

Emerald: Yeah. They are evil.

Swamp Thing: I could care less for good or evil. The green... is all I ever care about.

(Cinder fights Swamp Thing. Thanks to her pyromancy, She easily defeats Swamp Thing)

Cinder: Now listen. Roman and his henchmen are planning to terrorize the green with some toxins.

(Roman is seen in the boat as he laughs)

Swamp Thing: Let's see who gets the last laugh.

(Swamp Thing smashes Roman's boat)

Mercury: Thanks for the help, big guy.

Harley Quinn: Are you going to join us?

Swamp Thing: I'll consider the offer later. But for now, I suggest you to leave. The green needs to recover.

(The transportation of toxins was frustrated. Does the Society of Darkness have a Plan B? Stay tuned for more)