Helgaween-A-Rooney is the second Halloween episode of Liv and Maddie.
Plot[]
After Karen gives Maddie an old magic amulet she and Liv played with when they were little, Maddie accidentally gives up a spell of not having a twin; with disappointment after Liv insisted on changing the theme of their high school's Halloween party to "Brown". However, instead of erasing Liv from existence, the spell gives them another twin, Helga; thus making them triplets. After Helga is seen emerging from their closet, Maddie is in disbelief. Helga gives her a monster Helga-wedgie, and takes them to the school. Helga was seemingly feared the most on their high school, whlist using Liv, Maddie, and their friend Willow as slaves. Helga takes Liv and Maddie to school, where after an argument within the twins, Maddie decides to return home and use the amulet to erase Helga. To create a distraction, Liv makes her iconic "diva moment" towards Helga, who instead orders her "slaves" to capture her.
Meanwhile, Joey and Parker uses the amulet to make themselves clones. They soon realize that the clones weren't just as they expected after they have Karen and Pete captured, preparing to cook and eat them in the backyard. Joey and Parker then run back inside to the living room, where they meet Maddie, who attempts to use the amulet once more to make them twins again. Soon after, Helga returns home, and when Maddie questions of Liv's whereabouts, she reveals that she is Maddie's only twin; meaning that Liv has been fully erased from existence. While mourning Liv's "death", Maddie witnesses Helga swallowing the amulet, and uses this as an opportunity to use it again, this time wanting the family back to normal. The amulet then glows inside Helga's stomach, finally erasing her and Joey and Parker's clones from existence.
Maddie then awakes back in the time where Karen "hypnotizes" her with the amulet, showing that the events with Helga and the clones were only her dreams of having fear. Maddie meets Liv, who tells her to use her intended idea of "Brown" for the school's Halloween party, but Liv instead improves her original idea, much to Maddie's excitement.