On the New Year's Eve of the Year of the Snake, Lin Xi, a young owner of the antique shop "Zangzhen Pavilion", unexpectedly acquired a mysterious New Year lantern. The lamp was self-illuminating without burning, and in the light and shadow appeared the phantom of a strange woman playing the piano, accompanied by intermittent music. As the Spring Festival of the Year of the Horse in Bingwu begins, this lamp not only illuminates the dusty memories of the past, but also leads to an unfinished relationship that spans sixty years and is intertwined with the fate of the family and the country. When the lights of the old and new years were turned on one after another, Lin Xi and the woman in the light and shadow embarked on a time journey in pursuit of lost protection and the promise of true love.