A high school girl discovers biological limits of human. She takes on bizarre research to find the true meaning of life.

One day, a high school girl learns about the theory of evolution online, then realizes that our DNAs dictate success and failure in life. She then sets off to find the meaning of life, desperately hoping that a low achiever like her should find a reason to live. She seeks advice from online lecturers, pebbles by the river, and a Catholic priest, but none can give her a clear answer. After all, she must come up with her own answer. [LEE Hookyeong]