Uncle Kelbo tells the family they need to have their wizard powers re-tested, and long lost Aunt Megan must be there too. They track her down to Paris, but she won't come back until she gets an apology for an old grievance.
Alex organises a zombie-themed anti-prom, but isn't expecting it when real zombies turn up. During the dance-off, bits of zombies' bodies tend to fall off.
Justin creates a monster to guard his bedroom from Alex, but his plan backfires when the monster and Alex become friends.