The beginning of the end

Y/n and mischa are living a completely normal life until one girl named talia,who turns out to be Mischa's ex fiancé arrives in the small town of uranium City Saskatchewan,trying to ruin Mischa and y/ns relationship she decides that messing with the infamous cyclone roller coaster and rigging a mysterious fortune telling machine by the name of Karnak would work,what she didn't know was that she would be responsible for 6 deaths that would haunt her for the rest of her life