"Drainiac!" 2000 tells a story of a young, troubled woman who moves into an old, dilapidated house, only to discover that the bathtub drain in her new home is a portal to another dimension. Through this drain, a malevolent, slimy, tentacled monster known as the "Drainiac" emerges, drawn by the woman's emotional turmoil and the house's dark history. The creature begins to terrorize her, preying on her fears and manifesting in gruesome ways. She must fight for her sanity and her life against this grotesque entity that relentlessly invades her reality from the depths of her plumbing.