Nerissa kidnaps Matt and Mister Huggles and adds them to her new Knights of Destruction, while Irma is faced with losing the friendship of her classmate, Martin. The radio station K-SHIP goes to Sheffield Institute. Members of the K-SHIP team are Irma, Martin, Uriah, Bess, and Courtney Grumper.

Shagon returns to Heatherfield as his old self, Matt, and keeps W.I.T.C.H. distracted while Nerissa corrupts Cassidy Chacon into joining her. Will stops being angry about her mother's and teacher's relationship.

The Knights of Destruction attack the Fortress of Infinity, while Nerissa, posing as the Mage, corrupts Halinor Clarkson, the former Guardian of Fire. By accident, Cornelia receives the power of a Quinto Guardian, possessing all five elements, and Nerissa tries to use this to her advantage. W.I.T.C.H. must clean the cars and Will is reunited with her father.