Three best friends discover a Halloween magic store after hanging out in a unique shopping mall, possibly rumored to be haunted. The shopkeeper is holding a contest for the best Halloween costume to win prize cash and a golden trophy! When their best friend, Ariel Smiles, gets a text about it, they decide to check it out. However, the catch of the costume contest was not what they had in mind. Because the shopkeeper put a curse on them to be whatever they wear permanently on Halloween forever. Can the three teenage friends: Zack Mack, Joey Glory, and their friend Ariel, break the spell before turning into Mean Things on Halloween forever?