A wretched high school student, Wei Suo, had an accident one night when he was out playing with some friends, and was helplessly arrested and sent to the detention center. Later, he met an equally wretched old Taoist in the detention center. Later, he was seduced by the old Taoist and became his teacher. After that, Wei Suo went to school as usual during the day and went to learn martial arts and five elements magic with the old Taoist at night. Unknowingly, Wei Suo gradually became Mr. Yin and Yang, and later he discovered that the world he had lived in for more than ten years was not the world he originally knew.