Months after the Fajardo case, Antonia is still haunted by White and Sandra, while Jon is on the hunt for love. In Marbella, an attempt is made on Lola's life, wife of Yuri, the Russian crime boss Orlov's treasurer. Mentor sends Antonia and Jon to track her down before the mob gets to her first. On the ground, they're forced to team up with local cops Romero and Belgrano.

Orlov catches the attack on Lola on TV and dispatches Loba Negra to hunt her down. Meanwhile, Antonia, spiraling deeper into her pill dependency, comes clean to Jon about Heimdal, a surveillance tool she's been using behind his back. After the funeral, the two follow the money trail from Yuri's front business to a container holding a gruesome discovery.

Inside the container, Antonia and Jon discover nine dead girls and one survivor. When Lola sees the story break on the news, she sets out to retrieve her dog, roping in her former housekeeper. Orlov starts picking off anyone who worked with Yuri, but Loba Negra turns on his men, and clashes with Jon and Antonia too, hinting she may be playing her own game.

Lola visits a pawnbroker to pay her housekeeper, a meeting that spirals out of control, dragging in both the police and Loba Negra. Orlov discovers Yuri had been skimming from him and now wants Lola alive. With Red Queens being murdered across Europe, Mentor orders Jon and Antonia back to Madrid, but Antonia refuses to leave without finding who's behind the container.

Strung out on too many pills, Antonia lets slip to Orlov that Lola has been stealing from him. When Orlov turns on her, Jon and Loba arrive just in time. Lola makes a move to recover her dog, but things don't go to plan, Romero and Belgrano get involved. Somehow, every thread leads to the same place: a snow-covered cabin deep in the woods.

At the cabin, Antonia uncovers the real reason Lola is so desperate to get her dog back. Together with Jon and Loba Negra, she must survive a siege on the woodland cabin where they've taken shelter. The fallout will expose Loba Negra's true identity and confirm that Mr. White has been pulling the strings all along. Just when the dust settles, one of the leads finds themselves in mortal danger.