Under the streets surrounded by steam, the prosperity of brass gears and soot, there is a shocking darkness hidden - the deep space sect uses low-level civilians as sacrifices, uses strange symbols to awaken the servants of the abyss, and attempts to open the "abyss passage" to welcome the arrival of the "great being".
Lin Yu, a physicist from Blue Star, accidentally traveled here and was endowed with the talent of "Seeing Truth": when he looked directly at the symbols of the abyss and the existence of terror, his reason not only did not collapse, but was transformed into "resonance with truth", helping him analyze the deep mysteries of the universe. He has an absolutely rational character and only aims to explore the ultimate truth. However, due to his pursuit of clues, he has repeatedly been involved in conflicts between sects and low-level resistance organizations.
In the foggy alleys of the East End of London, he first encounters strange murders and "lurking figures in alleys"; he goes deep into the underground steam pipe network and gets acquainted with the "Iron Scale Gang" who rebel against the sect; he sails across the ocean with the steam ship and faces the non-human people in the deep sea; he travels to polar ice sheets, floating cities and even interstellar wreckage, step by step uncovering the connection between steam energy and the truth of the abyss.
