A drama set in a university hospital, depicting the real lives of neurosurgeons. A place where not even the slightest mistake is tolerated, the neurosurgery emergency room. In a life where one cannot relax for even a moment, the lives, struggles, and love of doctors standing between life and death unfold excitingly through the unique performances of Ahn Jae-wook, Kim Hee-sun, Choo Sang-mi, and Han Jae-suk.