Margot has always dreamed of becoming a doctor. While struggling to keep up with the grueling pace of the emergency room where she's taking her first steps, the young intern realizes she's seeing more and more young patients suffering from rare diseases. The recurrence of these exceptional cases puzzles her, especially since she's observing some rather mysterious symptoms on her own body. What if all these ailments were actually hiding a completely different truth?

作为急诊科实习生，玛尔戈虽然年轻也早已透支。一次晚班，她不小心漏掉了一个躺在轮床上的病人。惶恐之中的她又被要求立刻回到工作岗位，她的身体突然开始不受控制地疯狂出血汗，一场痛苦的求生挣扎开始了……