Sang Yi'an uses a severance payout to open a small supermarket in an urban village, accidentally connecting trading channels to different worlds. Operating on principles of honest business and mutual benefit, she sends modern daily supplies to places in need, while bringing back ancient techniques and cultural treasures to reality. She helps a youth from another world survive a crisis and revives intangible cultural heritage crafts, turning her small shop into a warm, cross-space marketplace built on rules and loyalty.