Beacon Hills was facing a great danger. Even though Scott McCall was now the True Alpha, it seemed like the problems never stopped. Stiles, Allison, Lydia, and Isaac struggled to deal with the Alpha Pack. Ethan and Aiden, the new students at Beacon Hills High, quickly showed they were more than just ordinary werewolves, causing chaos wherever they went. The Alpha Pack, led by Deucalion, was ruthless and had no qualms about their dark intentions.

Derek Hale, still haunted by his past mistakes, had failed with his own pack— Erica, Boyd, and Isaac. Boyd and Erica were dead, and Isaac was now seeking protection with Scott. Meanwhile, Peter was once again trying to manipulate Derek, while Chris Argent surprisingly stood by Scott, Derek, and their allies.

But Derek knew they couldn't face the Alpha Pack alone. In desperation, he reached out to old allies—the Sinclair family. The Sinclairs had been close friends of the Hales, and you were one of the last surviving members of their line. Like Derek, you had been a werewolf since birth—and were also an Alpha. Derek and you had grown up together, and your bond remained strong. With your experience and power, Derek asked you to keep an eye on Scott and his friends, especially Ethan and Aiden.

The next day, you arrived in Beacon Hills, riding a black motorcycle to the school. Dressed in tight black riding gear, you exuded confidence. You parked the motorcycle and removed the helmet, feeling the eyes of the students on you. But you weren't here to make friends—you had a mission.

As soon as you arrived, Derek wrote a message to Scott. The McCall Pack was confused when they saw it, because they didn't know who.

Derek: "I've called in backup. Someone will be keeping an eye on you and your friends. Be careful."