Lu Sihe, an intangible cultural heritage artisan from a vocational school background, is exploited and dismissed by the mother and son of Chen Jiahao, who returned from studying in France. Setting up a stall on a footbridge, she relies on her cheongsam craftsmanship to unexpectedly go viral, resisting the opposing party's plagiarism of designs and malicious suppression. Faced with an international luxury brand plagiarizing our country's millennium-old persimmon-calyx pattern and yet shifting the blame, Lu Sihe holds iron-clad cultural relic evidence to safeguard her rights internationally, allowing traditional Chinese craftsmanship to stand on the world fashion stage.