Mel and Maggie are learning to navigate life without their sister Macy; Mel distracts herself with new flings; Maggie takes on more than her share of demon hunting; Jordan teams up with Maggie while navigating his newfound magical powers.

Mel suddenly finds herself haunted by memories of her mysterious breakup with Ruby, while Maggie's demon-hunting habit puts strain on her relationship with Jordan. Harry tries to train the newest Charmed One, but gets derailed when they all must focus on a formidable new nemesis who starts wreaking havoc throughout the magical world.