Fatal Injections is about the nurse Maiken and her fiancé, Doctor Jacob who are stuck in a relationship without any passion. But all that changes when a young Norwegian nurse, Ida, joins them at the hospital ward. Because Ida is charming, seductive and spontaneous - in no time they all become best friends. A friendship that turns into sexual attraction and pure passion. For a second everything is amazing. But Ida has secrets. Dark secrets. And soon attraction turns into fear when Maiken begins to suspect that Ida is responsible for multiple deaths at the hospital.