Shen Ci, who spent decades devoted to aerospace research, reaches the end of her life with regrets and unexpectedly returns to her university days at twenty. Just as her ex-boyfriend's mother shows up to offer money and force them apart, she decisively cuts ties with her humiliating past. By chance, she enters a parallel world where prices have dropped dramatically, while her lifetime savings give her a solid financial foundation. Facing an ex-boyfriend who steals her research, classmates who band together to ostracize her, and society's judgmental stares, she remains composed. She devotes herself to protecting her insecure, timid younger sister and pursuing aerospace research, steadily growing and forging her own brilliant path among the stars.