Drainiac! (2000)

Plot

A group of teenagers discovers that the seemingly abandoned old house they’re exploring harbors a dark secret lurking in its plumbing. As they delve deeper into the mystery, they realize the water holds a malevolent force, threatening their lives and sanity. With suspense escalating, the friends must confront the sinister presence and uncover the truth behind the house’s haunted history before it's too late. As they battle both the supernatural and their own fears, survival hinges on their courage and unity.