Song Yintang, a female college student, appears to be an ordinary tattoo artist, but is actually the sixteenth generation descendant of the endangered Yin-Yang embroidery. Under her needles, what is tattooed is not only patterns, but also luck, cause and effect and vitality. None of her customers are ordinary people. There is a dog-headed CEO who is haunted by weird tattoos, a roommate who is tricked by a mysterious pattern, and an old friend who comes to ask for help with an ancient fragment. Behind every tattoo is a hidden secret and crisis.
