This is a recap of what happened in the past ten chapters:
A group of cloaked figures arrived at Beacon Hills only a few moments before sunrise, they appeared to be led by none other than Deucalion and Satomi, two extremely powerful alpha werewolves who'd lost their lives during the all-out war. The individuals spoke among themselves about some sort of signal that they were waiting for in order to execute a mission. The signal came shortly after in the form of a scream.
Braden wakes back up to find the world around her in flames, the battle raging and people dying, she looks for Scott and Chris, and Nolan informs her of their whereabouts, they both charge in their direction, only to find Chris alone trying to stand his ground against multiple foes. Braden and Nolan naturally help him, then he proceeds to let them know that Scott had gone ahead and followed the leader of the long tails (the scorpion men) who was none other than Matt.
Scott was indeed on Matt's tail who led him deeper into the woods and into a clearing, and it seemed he'd taken him exactly where he wanted him to be.
Meanwhile, at the hospital, the group wasn't doing any better, they were cornered into a room behind a vail of mountain ash, Maylee lets Lydia know that it is time for her to give the signal out in the form of a scream, she guides her through the process until she does what she was told.
Derek was also in a lot of difficulty, being tortured by Jennifer for her own amusement, she had Anas and Kali by her side very figuratively, considering they seemed to be afraid of her more than anything else. She had gained more powers than she ever had before she died. Lydia's scream had finally reached their ears, and after only a few minutes, new players entered the game, three individuals from the cloaked people had joined them, Erica, Boid and Deucalion. They gave Derek's enemies no other choice but to retreat.
Peter and Malia were doing their best as well in the illusion world, but they were not at the end of their pain, they were joined by Kate argent and her Berserkers who gave them a run for their money. They were hopeless until they heard Lydia's scream as well, and were saved by Hayden, Jackson and Ethan.
Stiles was stuck in an illusion of his own, with the creature pretending to be his mother. It was trying to convince him to jump off the roof, as some sort of a sick joke on top of the lunacy. Fortunately, Stiles figured out the ruse, but even with that he still couldn't fight the nogitsuné, Lydia's scream reached their ears there as well, before Noshiko Yukimura finally decided to make her presence known and saved Stiles for him fate.
Liam had run out of the hospital room after Maylee gave him an opening, he was trying to reach Alec. Along the way, he was of course attacked by multiple Oni, he exited the hospital only to find Alec with Daniel fighting for their lives. He joined them and they fought as hard as they could to stay alive but, in the end, it was Brett and Lori who came in to save the day after hearing the signal (Lydia's scream).
And the first rays of the sun announced the end of a very long night for the pack.