The funny and hilarious high school life of a man-in-law is full of excitement; the love life of a young man is full of excitement, but he doesn't know what it is. The road to study, the complex of foreign countries, and the homesickness of traveling. The PK between childhood sweethearts and international lovers, the struggle between innocent feelings and money worship, when tradition faces an openness and the emptiness behind the bustling lights. The beauty of the past, the helplessness of reality. . . When we were in our prime, do you know where your deskmate was?