During the Anti-Japanese War, the revolutionary fighters fought bloody battles until dawn and the last moment of victory, and died heroically. With her consciousness still intact, her soul traveled through the parallel modern world and became an ordinary girl of the same age and name, fully carrying the memory of the modern heroine's twenty years of ordinary life. Carrying the scars and deep-rooted feelings of a troubled family and country, he struggles to adapt and hide his heart in the modern society. With an obsession that spans a hundred years, he lives with his former lover in the vast sea of people.