Marek Slavik's backstory; he wants revenge on the Americans. He takes a classifed case file.
He sends his secretary, Maladi Malanova, to fetch files for him. He sends her to New York to deliver them to an operative there.
King gives them information about a Russian Superhero coming to New York and wants to Titans to trail him. A flashback of when they first met Leonid Kovar.
Robin and Wonder Girl replay the information to the other Teen Titans.
Maladi has arrived in New York.
A week later, Kovar has arrived in New York. At the airport, a man falls over. It's implied that Maladi is the plague carrier and it's already spreading.
Beast Boy, following Kovar, reports to the Titans what he sees. Lacking the information that the reader has, Robin thinks that Kovar is the carrier.
They follow Kovar; since Kovar knows Robin, Kid Flash and Wonder Girl, and Cyborg, Beast Boy and Starfire are too obvious, Raven is the only one to go inside. She finds out the Customs Agent dies from radiation poisoning.
The Titans are still trailing Kovar after two days; however, they can't figure out what he's doing or looking for. Wonder Girl is the only one who doesn't think he's the culprit. Kovar is looking for Maladi Malanova; he's about to go up to her room when he sees her exit. Maladi appears to be very ill but gets into a cab. Now dressed in his costume, Kovar exits the hotel. Sensing he's after the girl, Starfire and Kid Flash go to stop him. A fight breaks out between Kovar and the Teen Titans because he's been ordered to stay silent of his involvement with the plague.
The Teen Titans are interrogating Kovar. He tells the truth to the Titans, but because Kid Flash doesn't believe him, Kovar escapes to continue his plan alone. Beast Boy follows him.
The Doctor and Madeline are discussing the disease inside Maladi. They tried to explain it to her, but she's in a hurry and leaves.
Beast Boy is searching for Kovar. Even though the Titans have mentioned nothing, Beast Boy feels the need to prove himself.
Beast Boy had no luck finding Kovar. Kid Flash voices his dislike for Kovar while Robin gives the order to the Titans to find Maladi.
Maladi's illness has taken a turn for the worse. Kovar reveals to Maladi that Slavik lied to her. The Titans interrupt him before he kills Maladi; however, they still haven't realized that he isn't the enemy. They fought, but because Kovar cannot defeat the Titans, they decide to do it the Titans' way. They take Maladi to a hospital.
A week later, Maladi dies. While Kid Flash yells at him, Kovar reveals that he and Maladi were engaged.