Ethan Lowe, a resident physician in the Emergency Department, is betrayed by both his ex-girlfriend and colleagues. On the verge of being fired, he unexpectedly binds the strongest Resident Training System, gaining the ability to predict patient outcomes and diagnose rare conditions in advance. With the system and his excellent medical skills, he repeatedly saves patients from the brink of misdiagnosis, gradually rising from an ostracized resident to a respected medical professional.