Accidentally opening a vortex sucks!
Fifteen-year-old KIZZY TAYLOR is just hoping for an evening of fun when she joins her friends in a spelunking expedition through an under-city tunnel. But fun turns bizarre when she accidentally opens a vortex and her stepsister is swept through to an evil alternate dimension and trapped. Kizzy feels responsible for her stepsister’s dilemma and for the murderous rampage of the monster who emerged from the vortex in her place. The only way to save her stepsister and stop the monster is to reopen the vortex before it seals. But will she ever get home?