Su Wan, a 26-year-old product manager, works overtime until three in the morning. She works an unfulfilling job and copes with her mother's pressure to get married. Her biggest comfort every day is a pack of bear cookies given to her by Xiao Zhou from the convenience store downstairs. She didn't know what she wanted until late one night, she picked up a glowing USB flash drive.
"The system of the Space-Time Trading Company has been successfully bound. Welcome, plane merchant."
From then on, she can travel freely between different planes. There is a person in need of help in every plane - Shen Nian, a tailor who was guarding the ancestral embroidery book in Shanghai in 1921 and could no longer survive; Lin Mo, a female scholar who disguised herself as a man in the Ning Dynasty and failed three times but refused to accept her fate; a machine who survived alone in the wasteland world and repaired machines to be warmer than humans. Mechanic Blade; Gu Xingchen, a marine biologist who has lived alone for three years in a deep-sea research station in the near future, talking to luminous creatures; Elena, a "zero magic" student in a different world's magic academy who is laughed at by everyone; Chen Shuxiang, the proprietress of a bookstore that has been open for twenty years in the parallel modern world and is about to close...
Su Wan helped them find a way out and see their own light.
This is not a "savior" story. Su Wan is not omnipotent. She will be tired, afraid, and want to give up. But when she thought she was just helping others, those she had helped—with thimbles, brushes, dice, orchid brooches, and hand-painted postcards—stretched out their hands from different time and space and held her.
"When we help others, we are actually helping ourselves."
