In an ancient and luxurious mansion, a young girl named Sally moves in with her father and her new stepmother, seeking a home to build a new life. However, she soon discovers that the mansion harbors a dark secret. Strange tiny beings, invisible to the human eye, dwell in the depths of the house. As Sally explores the forgotten corners of her new home, she stumbles upon a trapdoor in the basement that leads her to a terrifying world filled with creatures that, although they seem harmless, have very malevolent intentions.
Desperate, Sally tries to alert her father and stepmother about the imminent danger lurking in the darkness, but her warnings are dismissed, and they think she is imagining things. The little girl finds herself alone against forces that want to trap her, leading her into a labyrinth of horror where every shadow may hide a threat. As the creatures become bolder, they begin to manipulate and destabilize family life, turning her dream home into a psychological battleground.
With an unsettling atmosphere and a constant sense of claustrophobia, this psychological horror story tests Sally's relationship with her family as she tries to fight against enemies that are not only real but also cunning and malicious. Will she survive her encounter with the darkness, or will she be caught in its sinister web?