In the picturesque landscapes of Scotland, a young and aspiring trainee architect named James McAlister finds his life on a promising trajectory. He's recently met a captivating woman named Sarah at his workplace, and their connection blossoms into a deep, loving relationship. James and Sarah eventually marry and welcome a beautiful baby into their lives. However, their happiness is suddenly shattered when James is diagnosed with IGA Nephropathy, a rare kidney disease. The emotional weight of the diagnosis strains James's work and family life as he grapples with the debilitating effects of the disease. Over time, his health deteriorates, and he faces a harrowing choice: starting peritoneal dialysis, a painful and invasive procedure, in a desperate attempt to regain some normalcy in his life. As James's body is subjected to the relentless onslaught of infections and surgeries, he reaches his breaking point. The once vibrant and hopeful architect is now a shadow of his former self, drowning in despair. His marriage with Sarah faces its own trials as she struggles to support her ailing husband while caring for their young child. In a last-ditch effort to regain control of his life, James decides to switch to haemodialysis, hoping for a breakthrough. However, the relief he seeks is short-lived. In the sterile and alien environment of the hospital, James begins to feel less like himself, as if something insidious is invading his body and mind. Haunted by strange events and anomalies in the hospital, James embarks on a clandestine investigation. What he uncovers shocks him to his core.