This military train contains a weaponized plague, which happens to be the one Red Claw wants to unleash on Gotham as part of her plan. As Red Claw and her cronies rob the train, Batman glides in to stop them. Unfortunately, Red Claw gets away, threatening to unleash the plague if he tries anything funny.
Gordon receives a ransom call from Red Claw, who demands $1 billion within 24 hours or else she'll release the plague on Gotham. Batman, out of costume and driving to his date with Selina, calls Gordon and is informed of this. As Bruce picks up Selina and drives away, Selina tells him of her potential success against Multigon. Unfortunately, Red Claw's henchmen, who know Catwoman's secret identity because they were spying on her, attack their car. Bruce and the terrorists engage in a wild car chase. Fortunately, Bruce is able to escape. As Bruce drops Selina at her apartment, he asks Selina to tell him whenever she's in trouble, since Bruce does care about her. When Bruce leaves, Selina changes into her Catwoman costume to investigate Multigon a little more.
At the Batcave, Bruce wonders along with Alfred as to why Multigon would want to get rid of Selina. Alfred notices a strange hair on Bruce's jacket, which Batman realizes is a cat hair; with this clue, he deduces that Selina is Catwoman. He goes to Selina's apartment, where a Multigon worker attacks Selina's secretary Maven. Batman arrives just in time to save her and ask where Catwoman has gone, and Batman follows.
Catwoman is seen at the "resort", where she takes pictures of the military base underneath. Batman arrives to save Catwoman from being killed, but the two are captured when they try to escape.
The two are later seen tied together, where Red Claw has them sealed in a fallout shelter. Red Claw drops acid on the container of the viral plague in order to kill the two, saying that she doesn't need it as long as Gotham feels threatened. The two manage to escape, but Batman urges Catwoman to go on while he tries to destroy the plague. Batman then pours gasoline everywhere and lights it, destroying the compound as well as the virus.
As Catwoman watches the compound explode, Red Claw tries to have her revenge by attacking her, but a mountain lion comes and saves her.
Catwoman goes back to her apartment, where Batman is waiting for her. Batman says he didn't tell the police about the cat burglaries because he didn't want her to be taken away like a common criminal. At which point, he handcuffs her with his special handcuffs.
Tropes in this episode include:
- Bat Deduction: Batman finds out Catwoman's true identity when Alfred finds a black cat hair on his jacket. Even though Batman had previously encountered Catwoman's cat Isis, this is still very inconclusive evidence. Made even more silly by Alfred noting that he has "never seen one quite that color," when he only has one black hair to look at, making it nearly impossible to guess what markings the cat might have.
- Bittersweet Ending: Batman and Catwoman manage to stop Red Claw and the terrorists, but because Catwoman is still a thief Batman is still forced to arrest her, even though he cares about her and it is implied he returns her feelings for him. The most he is able to do is arrest her himself so she isn't taken away by the police like a common criminal.
- Bond Villain Stupidity: Instead of escaping in her remaining helicopter, Red Claw indulged in trying to beat up Catwoman first for ruining her scheme, while gloating of her greatness as a terrorist, getting herself taken down and captured.
- Bullying a Dragon: A mob boss only agrees to give Batman information on Red Claw under the condition of laying off the South side, which he says as a warning. Batman, however, threatens to come at him from all sides if he doesn't give him the information.
- Dropped Glasses: Maven fights back and tries to escape from the Multigon worker who broke in. However, he grabs her left arm so violently, her glasses fall off. It's revealed that Maven is unable to see without them. Luckily, Batman arrives to save her, but is unsure what is going on, because of her point of view (which we see through her eyes) before she's luckily able to find her glasses. As she places them back on, her point of view is clear again (which we see through her eyes again until she runs to the balcony for which we now see the normal view of the show).
- Fluffy Tamer: Catwoman is saved from Red Claw by one of the mountain lions she befriended earlier.
- Heartbroken Badass: You can hear the hurt in Batman's voice as he tells Catwoman "More than you will ever know." about caring about her.
- Hollywood Acid: Just a few drops of it seem to be able to eat through a thick metal container.
- Indy Hat Roll: Catwoman does this to escape the compound.
- Irony: Red Claw is flattened and reduced to cowering in terror by a clawed predator.
- Kiss Diss: A more tragic example. At the end of the episode when Batman shows up at Catwoman's home, Catwoman realized that he really did care about her and leans toward him in an attempt to kiss him again. Before she can though, Batman puts handcuffs on her and sadly tells her "More than you will ever know."
- Stuff Blowing Up: The fallout shelter explodes because of all the explosives that happen to be lying around.
- Train Job: Red Claw and her men drive behind a military train to steal the bioweapon onboard. They use a bazooka to destroy the link between cars and leave most of the guards stranded on the tracks. Then, another goon dumps knockout gas into the train car with the super germ and another one rappels off the train car's room to use explosives on the door. Not even Batman's intervention manages to foil the heist.
- Would Hit a Girl: Batman is surprised to discover Red Claw is a woman, but that doesn't stop him from quickly recomposing himself to beat her ass.Batman: I'm an equal opportunity crimefighter!
