Alex is really sad so the gang try to find out what's wrong. Juliet suggests that maybe she missed Harper. So the gang decide to invite her to the castle. So, Harper spends her time with Alex with the later one being excited. But what happens when Harper drinks a potion which make her transform into a goblin. What will Alex and the others do to get Harper back to her normal self.
- Selena Gomez as Alex Russo
- David Henrie as Justin Russo
- Gregg Sulkin as Mason Geyback
- Bridgit Mendler as Juliet Van Hussen
Special Guest Star
- Jennifer Stone as Harper Finkle