Following the devastating loss of The Elders, Mel, Maggie and Macy take over their duties. Maggie takes time to celebrate her birthday with a big bash, but Mel finds herself too preoccupied with their new responsibilities to join in the fun. As the girls clean up the following morning, Macy shocks her sisters with an announcement. A mysterious hooded foe attacks The Charmed Ones who escape through a portal while Harry has an unnerving encounter with the villain. The girls land in a secret location where they uncover more about the mystical world of The Elders…and community workspaces. Macy nurses a serious wound and Maggie meets a handsome stranger. The Charmed Ones quickly become aware of the gravity of their new roles and must decide if they are truly prepared for the responsibility.

While Mel and Harry try to crack the Book of Elders, Macy struggles with the good and bad aspects of her demon side. Maggie competes with Jordan for a promotion. Macy ventures out alone and meets an injured and terrified witch named Abigael. Mel and Harry visit another dimension.