The protagonist Ye Mo is an ordinary white-collar worker who has just graduated from college in the 21st century. She has mediocre qualifications and has not had much trouble in her life until she was selected by the system at the age of 22 and joined the fast-traveling army. She was lucky enough to get a novice gift pack with a portable space and the opportunity to be reborn as a freshman in high school. And he started fast-travel missions again and again, slowly improving himself, changing his mediocre destiny, and allowing everyone around him to live a happy and comfortable life. Her greatest advantage is that she is content and down-to-earth.