A remarkable book, a figure...... Because all sorts of coincidence, math boy Hao Xintong met history girl Bai Canran. Two notes on a book, history and present intersection point, they walk along the traces, struggle for five four days. But just as everything will click into place, white bright suddenly choose to give up. Behind the note what is the secret? Hao Xintong and the white bright and how will the outcome? The story of the youth are similar but also each are not identical, this film is joined the many elements of the five four period, the temporal and spatial overlap, explore the Peking University Spirit, fascinating. In May 4, 2014, 95 years after the May 4th Movement, let us follow the "wait for you a hundred years", to pursue the untold stories of those years.