At Hogwarts, the real power doesn’t come from houses—it comes from a dominant Slytherin clique known as the Serpents, led by the influential Regina Nott. At her side is Gretchen Rosier, a sharp and observant student who maintains her place through secrets and social awareness, and Karen Fawley, whose charm keeps her effortlessly included. When transfer student Cady Herondale arrives, she is pulled into the group, quickly learning the unspoken rules that control Hogwarts’ social hierarchy. As Cady rises, tensions form within the Serpents, especially for Gretchen, whose position becomes increasingly unstable. Outside the clique, students like Janis Ives and Damien Blackwell challenge the Serpents’ influence, while others—like Aaron Woodcroft and Shane Omen—get caught in their orbit. Meanwhile, Gretchen’s growing connection with Slytherin Quidditch captain Marcus Flintley introduces a more genuine side of her life, complicating her loyalty to the group. As alliances shift and secrets spread, the Serpents’ control begins to crack, revealing how fragile power at Hogwarts really is.