Alex discovers that Rosie isn't what she seems, and is tricking Justin into doing evil. With the help of angel-in-training Tina, she tries to defeat the plans of the dark angel Gorog. Harper forces Maxine to have a slumber party so that she can live vicariously through her.

Alex and Harper rent an apartment in a complex whose 13th floor is exclusively for Wizard World creatures, only to find that Mason also lives there.

Mr. Laritate, who lives on a different floor in Alex and Harper's apartment complex, discovers the 13th floor after Mason breaks the elevator, and ends up bitten by a zombie. Meanwhile, Felix's wand is stolen.

After Dexter reveals himself as Gorog, the angel of darkness, he turns Felix evil in order to use his powerful wand to take over the Wizard World. Alex, Justin and Max learn from Professor Crumbs that they must use their wizard powers together to defeat Gorog and the dark side.