Shanghai Beach in 1935 was an ukiyo-e where light and darkness intertwined. At the engagement party of the customs inspector's daughter, a sudden secret letter, like a pebble thrown into a quiet lake, opened the prelude to the mismatched lives of the two women.
Ji Qingyi, the daughter of a real customs inspector, resolutely walked into the darkness to pursue the truth about her home and country, and transformed into the cold and mysterious agent "White Pigeon".
Su Jinshu, an orphan from a low-income family, plays the role of an elegant and fragile "porcelain beauty" in a wealthy family's mansion in order to protect the secret of her life experience.
When the gears of fate begin to turn, the two souls exchange identities in the whirlpool of lies and truth. In this foggy situation, they are not only each other's most dangerous threat, but also the mirror image of their connected destiny. Under the scorching flames of love, family affection and the righteousness of family and country, how will they complete their respective missions, and what kind of destination will they find in troubled times?
