Mother hears your thoughts. He knows your fears. And he will never let you go. Medical student Olesya discovers that she cannot go outside. Neither she herself, nor the unexpectedly fallen guest, nor the neighbors - no one manages to leave at least the floor on which they live. And while everyone clings to their little familiar world, the world around them begins to imperceptibly and irreversibly deteriorate. Fade. To be showered with concrete crumbs, to turn into ashes and dust, fog and grayness. And then out of the grayness she appears - Gray Mother. An uncompromising capsule psychological thriller, the action of which takes place in the confined space of a seemingly unremarkable house.