Cassie is stunned when a notoriously evil figure from her past shows up on her doorstep. However, her surprise quickly turns to suspicion when he asks her to return the medallion she found in the wreckage of the fire that killed their parents. Cassie storms off but is captured by Eben and his band of witch hunters.. Jake offers to trade himself for Cassie’s freedom and when Adam realizes they’re in trouble he calls the Circle. Meanwhile, Faye and Diana are concerned when Melissa starts spending more time with Callum.

Cassie catches Blackwell sneaking around the abandoned house. After confiding in Adam, he tells her he knows Blackwell was looking for a device to drain witches’ powers and clearly back to his old ways. Faye shows up at Lee’s house to invite him to the school fundraiser, but is taken aback when Eva greets her at the door claiming to be Lee’s girlfriend. Meanwhile, Melissa encourages Diana to date a normal guy and points her in the direction of a new, handsome guy in town. Dawn runs into Blackwell at the school but the reunion isn’t quite what she expected.

Blackwell warns Cassie and Adam that their love may be destiny, but it’s also a curse. He suggests they go visit her grandmother, Jane to find out if there is a spell to reverse it. Jane warns Cassie that someone in the Circle will die if the curse is awakened. Meanwhile, Eva starts stalking Faye and Charles makes his next move against Blackwell.

Jake gets a surprise visit from an old acquaintance named Samuel, a witch hunter, who has a message for Blackwell about Eben’s surprising next move. Cassie intervenes, forces Samuel to reveal his news and is stunned to find out what Eben is trying to resurrect. Meanwhile, Diana is frustrated that keeping the secrets of who they are is building a barrier between her and Grant. Faye and Melissa agree to help out Adam at the Boathouse and in return get him to help them use their magic to enhance their love life.

To protect themselves from the witch hunters, Jake, Cassie and Faye seek out Jake’s grandfather Royce, to find his family’s crystal and are confronted with disturbing theories about the events of sixteen years ago. Meanwhile, Diana tries to balance her pursuit of the Glaser crystal with Melissa and Adam with her romantic life with Grant, who demands to know what she’s hiding. At the same time, Callum attempts to re-insert himself into Melissa’s life. Charles and Jane plot their move against Blackwell.

It’s Prom night in Chance Harbor and after Adam uncloaks a crystal hidden in the school, Blackwell tells Cassie she can use her dark magic to find it. When Cassie follows this advice, it leads her to a dangerous discovery. Meanwhile, Faye invites Jake to Prom, despite the fact that he stood her up two years earlier. Adam, Diana, Cassie and Melissa finally make it to Prom but when they lose the crystal to Eben, they end up in a life and death situation. Meanwhile, Dawn attempts to stop Blackwell, who casts a deadly spell on Charles.

After Faye is attacked by the Witch Hunters, Jake, Melissa and Adam set out to save her. Blackwell tells Cassie and Diana that the only way to stop the Witch Hunters is to use their Balcoin blood to unleash the Crystal Skull. Diana is reluctant, but Cassie convinces her it’s the only way to help their friend, but she’ll need to tap into her dark magic to do it. Meanwhile, Dawn and Charles are faced with a new way to get their power back...but at a very big cost.