They came from a dying world to steal Earth's water... but they didn't anticipate resistance from the vampires, who realize the aliens' plans, if carried to fruition, would doom the human race. And with no humans or other life left on Earth, the planet's furtive vampire population would be deprived of its sole food source. Now the vampires must wage a secret war against the invaders while hiding their own existence from the humans, as the aliens also conceal their presence so the humans won't learn of their invasion already underway. Sebastian arrives. He's a mysterious Elder vampire sent by the Conclave of Elders, who disapprove of Gaunt's decision to handle the alien threat without consulting them. But Sebastian has his own deadly secrets. Hailey Rumson arrives to start classes at the local college in the fall. She had moved away two years earlier, before Courtney Cartwright came to town. Hailey is old friends with Brandon but has never met Courtney, who had become her cousin's BFF. Hailey wants to learn more about her cousin's death and distrusts Courtney because she spends so much time around her cousin's killer. The military intercepts Brexa as she enters Earth's stratosphere to warn Kira and Kevian their lives are in danger. Saskia, an alien rebel, takes over the Neptune Corporation while Kevian and Kira are on the run from Quill. Baytok, a hermit-alien monk, aids a renegade vampire. Of course, the vampires -- Young Bloods (Misha, Scarlett, Jaxson, and Nicholas), Old Bloods (Zachary and Audrey), Elders (Gaunt, Talia, Tobias, Marcus, and Francesca) -- are back. And that message Jansa sent to the home world? Someone got it. And they're coming. But not who anyone expects.