Tangtang, a modern medical student, transmigrates into an ancient age of chaos and discovers that she is the key to connecting two dimensions. The countdown on a Jupiter pendant, the star markings on the mysterious young Qi Yan, and the quantum entanglement between twin sisters all point to a crisis that will soon destroy both worlds.
To save her mother, a modern doctor, and Yun Niang, a noblewoman from the past, Tangtang sets out to uncover the conspiracy behind "Beichen AI." On the day when two moons share the sky, she uses the song "Ballad of the Bronze Mirror" as her guide, weaving a star bridge across dimensions with red thread and allowing two civilizations to be reborn through their collision.
Ten years later, on the adorable Star Bridge, children of the blended civilizations are using stardust to create the future. Deep in the universe, however, the red-thread network has only just lit its first unfamiliar star...
