Ana misses her friends terribly. She has been hiding out in the fairy world for several months waiting for things to blow over. So, Ana and her friends decide to go to the pool and have a sleep over.
Unfortunately for Ana and her friends they have no idea that Thorne has discovered the secret of the Grand Grimoire. He already has a plan and is setting it into motion. The only problem is that he needs Tiberius to carry it out.
The girls all set out to have a normal quiet day at the pool. They get the surprise of a lifetime after they barely make it into the water. The Earl King makes yet another special appearance. Attacking everyone as he sets his eyes on the girls. They manage to escape him, but he quickly catches up. It isn't until a boy appears and the creature goes after him that Ana is able to destroy it.
Thorne and Tiberius make their way around the world hunting for the objects they need to perform an ancient that will summon the devil himself. Thorne has enlisted the help of several other magical creatures.
The very moment Rosa and Tamsin's parents discover Tiberius's plans they get a group together and start chase. The girls will not allow the group to leave without them, and neither will Cayce. They quickly catch up but is it enough to put an end to their quest? Will the group stop Tiberius once again, or will he capture the most powerful spell book ever?