A red string and a copper coin connected the wondrous bond between Princess Jinyang, Little Sizi, and Li Qin by a twist of fate. Little Sizi, who died young in history, changes her destiny in modern times. Li Qin and the dual-traveling "dream sweetheart" Little Sizi embark on a new magical journey blending food, cultural tourism, and daily life, taking Little Sizi's entire family to experience a novel and warm modern routine. As the spokesperson for the Great Tang, Little Sizi unexpectedly skyrockets in popularity, bridging ancient and modern cultures, and is eagerly invited by major cultural tourism boards to kick off the first stop of her travels. Just as everything tends toward perfection, unexpected troubles arise.