Everyone in the Immortal Realm has a floating Immortal Tribulation Index above their head, while the Anti-Fraud Center's staffing has been cut for seventeen consecutive years, leaving only three people. Qin Wuyou, a ninth-rank junior official who can see through numbers, joins forces with a director who only cares about funding and the immortal maiden Su Jiujiu, whose index is permanently zero, to investigate cases. Starting with small scams involving hawthorn pills, they work their way up to pig-butchering scams, online immortal romances, and cultivation loans. They then form a team to descend to the mortal world and investigate a livestream scam that defrauded 300 million people, ultimately uncovering a shocking reversal. The index actually represents the number of people someone has deceived, and the greatest scam is not a fraudster's sales pitch, but the very system you live in.