Dr Brain 2021 When Lee Se Won was a child, his mother died in a hit and run accident He decided afterwards to become a brain scientist He is a genius and he remembers everything he sees 20 years after his mothers death, Lee Se Won has become a famous Ph D scientist in the brain science field One day, a mysterious person contacts him and asks him to extract information from the brain of a man who committed suicide Lee Se Won is interested and accepts the proposal He attempts to extract information from the dead mans brain, but fails A couple of days later, he finds himself behaving differently and seeing things differently Lee Se Won looks into the dead mans case