In order to persuade his sister, a top student, to enter a senior high school, Bai Yuqiu, a sophomore in high school, was violently hit by a truck and caused her soul to travel. [Please ignore Mouya's literary level, you are so lax, hey, you are so lax==] A time-travel that I have never thought of, and it is a time-travel to the world of The Prince of Tennis. Let Bai Yuqiu go from fear to despair; from indifference to adaptation, and let her understand the unchanging principle of "taking care of things as they come". When she thought she would continue like this, her appearance made Bai Yuqiu find the meaning of life.