Deep in the neon-lit modern city of Sinyeon City, ancient contracts are quietly resurrecting. Lin Mo, a 25-year-old programmer, appears to be an ordinary operation and maintenance worker at a major Internet company. However, while working overtime late at night, he accidentally established a resonance with a group of "data flow fireflies" wandering in the torrent of data - he became one of the few "resonators" in the city who can sense and contract with the mythical creature "spiritual beast".
