There is no going back... High school student Cassie and her friends, who belong to a secret circle of witches, find it difficult to imagine that the situation in the town of New Salem could get even worse. A team of powerful witch hunters have targeted them and want to destroy the girls one by one. Meanwhile, Cassie's half-sister Scarlett is not going to rest until she gets a place in the secret circle, even if it means killing Cassie.

The only hope for the witches in the fight against the enemy is the Book of Shadows, when... it belonged to Cassie's father, an ancient guide to the world of black magic. However, Cassie soon realizes that if she opens the book, the consequences will be dire. The girl falls under the spell of an ominous spell found in the book, which gradually begins to control her feelings and thoughts, threatening her romance with Adam. Cassie struggles with the darkness that has settled in her soul, and meanwhile the ring of danger around the witches continues to shrink.