You're just a locksmith! What are you doing catching swindlers at the start?

Lin Zhou, a skilled locksmith with master-level lock-picking abilities and the power of invisibility, found himself transmigrated and bound to a mysterious system. Participating in a high-stakes competition where contestants earn money through their skills, with the top earner after thirty days winning, Lin Zhou's unique talents quickly gain attention. His first job involves opening a C-grade lock in mere seconds, exposing a compromising scene in a homeowner's residence and catapulting his live stream to a massive following. As he takes on more challenging tasks, from unlocking safes in a foot massage parlor to uncovering a secret brothel, Lin Zhou walks the fine line between skillful locksmith and unwitting participant in high-stakes investigations.