We always have all kinds of strange feelings and encounters in life, Ye Xian, Mo Xu, Xia Wan and Lu Weiyang. Four people who didn't know each other became tablemates because of a strange seating chart. However, why was Lu Weiyang's tablemate the emotionally confused Ye Xian? Two other close friends suddenly changed classes, and Lu Weiyang discovered that there was a strange past between the four of them. Ye Xian was eventually transferred. Lu Weiyang noticed something was wrong, but looking back, Ye Xian, Mo Xu, and Xia Wan had already walked away. Lu Weiyang, who was alone in the same place, suddenly smelled the vague smell of tobacco smoke. . .