This drama is adapted from the comic of the same name. It tells the story of Kawauchi Masa, a brain surgeon who suffered a brain injury in an accident and suffered severe sequelae. Not only did the memory of the past two years completely disappear, but new memories could not stay for more than one day. Therefore, Xiaoya could only do auxiliary work as a nurse, but in front of her, a weird brain surgeon Sanpei Yuji appeared. Through his words and deeds that did not read the air, did what he wanted but brought help and guidance, Xiaoya once again embarked on the road of being a doctor while being a patient. Soon, the mystery hidden in Xiaoya's lost two years of memory was revealed...