Sixteen-year-old Maks is sent to the countryside to care for his ailing grandmother. What was once a childhood haven now feels dark and alien. His beloved grandma no longer recognizes him, and his older sister Emma—shaken by a ruined tennis career—seeks comfort in drugs and detachment. Sibling dynamics, initially marked by rivalry, begins to shift. As they cross erotic boundaries, something awakens: a monster Maks needs to confront, along with a terrifying end of innocence.