In the quiet city of Harway, Dr. Jenny's life shatters when an unusual patient with blood-red eyes arrives at her hospital. As a deadly virus known as Proxima spreads, turning victims into cannibalistic monsters, Jenny is forced into service as one of the feared Green Doctors. Trapped inside a quarantined facility descending into chaos, Jenny's fight for survival leads her to the haunted Room 503 - where the darkest whispers hide a terrifying secret. A chilling tale of fear, sacrifice, and the thin line between humanity and monstrosity.