Beauty blogger Amy faces a career crisis and heavy debt. Returning to her hometown, she accidentally discovers her uncle's long-piled ancient tea-oil black soap has astonishing results, and resolves to help him walk out of the deep mountains and make a comeback through live-streaming e-commerce. However, the elder who strictly adheres to simple ancestral teachings firmly opposes superficial marketing, the former agency head even comes to demand the formula with a huge penalty, and netizens' doubts come flooding in. Facing layer upon layer of resistance, can Amy wash away the mundane and stick to her true self, resolving her debt crisis with the Lao Chen family's genuine craftsmanship, and giving the deep mountain ancient soap a new lease of life?