In the steamy city "Etherburg" that is shrouded in industrial fog all year round, the heroine Ella, a low-level cleaner, accidentally picked up a delicately constructed brass heart that was still beating weakly while cleaning the mansion of a top-level dignitary. This heart is not only the energy core that drives the entire city's central tower, but it is also rumored to be an artifact left behind by the first-generation Archon, the founder of the city's "eternal life." The theft of the heart plunged the entire city into panic and martial law, and Ella instantly became the most wanted criminal with the highest reward in the city. During her escape, she was guided by her heart and found Lester, a mechanic who was hailed as a genius but was expelled for "heretical research". Lester is the true creator of the heart. He tells Ella that the heart is not an artifact, but an "alchemical curse device" that can steal the life force of others to maintain the life of the wearer. The current governor is using it to secretly absorb the lives of the people at the bottom in exchange for his own immortality. Ella and Lester must evade pursuit under the supervision of the Archon's "Mechanical Guards" and the ubiquitous "Steam Eyes" while looking for ways to destroy the heart or reveal the truth.
Highlights: The core suspense revolves around the true function of the "heart", which is both a survival tool and a talisman. The plot has a strong twist. The so-called "miracle" is actually a cruel "sacrifice", creating a sense of cold and desperate suspense in the steampunk background. The male and female protagonists have no golden fingers and rely on their intelligence and professional skills to compete in desperate situations throughout the whole process.