Shen Fang is twenty-seven, a vocational college graduate, and works the night shift at the front desk of Chengwan Residence in Shanghai. Residents see his old shirt and call him a "temp" without a second thought. His supervisor, Gu Mingyuan, wields complaints like a whip: anyone who refuses to take the blame for the property management company gets their performance bonus docked. Shen Fang has no respectable family background and little savings, only the patience life has worn into him and an old romance he would rather not discuss. One stormy night, a pipe in the service shaft on the twenty-seventh floor bursts. Water pours through the ceiling, while residents, security guards, and the maintenance team all point fingers at one another. Shen Fang, however, quickly finds the maintenance records, spare keys, and the room numbers overlooked in the risk assessment, saving the furniture of every resident on the floor and an important contract. He finally gets a long-overdue thank-you, and catches the property manager's attention. Shen Fang's particular talent is turning the recurring minor problems in a building into a constantly updated "resident service map": which elderly resident can't stand noise, which elevator has just been reported for repairs, which door key must never be lent out, and which supplier always slips extra charges into their quotes. He can't see the future or solve problems out of thin air. Every record, verification, and coordination takes time and trust to deliver. Each success brings new residents, while each mistake leaves a trail of accountability. As he rises from front-desk clerk to building services manager, then moves into apartment operations, community retail, and urban renewal projects, his rivals are no longer just a harsh supervisor, but companies whose data and contracts shape the lives of hundreds or thousands of people. What he wants to prove is not that he is superior to anyone, but that frontline service workers can help make the rules too.