The four of them form a crime-solving team of friends. No CP. The wandering Jiang Shuyue, Xiao Li, Wen Qingyao and Wei Zheng passed by Ningshuang Village, which is famous for its Ningshuang Notes, and encountered a strange and murderous case. The old paper-making master died in an airtight greenhouse. His body was half-burnt and half-covered with hoarfrost. The famous papers all over the house were turned into ashes. The villagers spread rumors that the frost god had sent down frost and fire to kill him, and the government also planned to hastily finalize the case with heavenly punishment.
The four of them investigated the mystery of ghosts and gods, and used the physical properties of special saltpeter paper to unravel the conspiracy of the murder. However, during the investigation, an old arson case was involved. Family blood feuds, maritime smuggling and profit-seeking, and the sea maps of the previous dynasty hidden in the paper patterns have surfaced one after another.
They encountered traps, threats and roundups one after another, tearing apart the lies shrouded in frost and fire amid numerous crises. There is no divine condescension in the world, and all the unimaginable visions are just man-made disasters caused by the greed of the human heart.
