Oil Card Conspiracy

Gas station owner Zhang Lei falls from a building late at night. Suicide is indicated by the suicide note, fingerprints, and surveillance footage. However, criminal police Lin Feng detects an anomaly from metal shavings on the victim's cuffs—this is not a desperate leap but an execution to silence him. Investigating further, a cross-border criminal dark web surfaces: an international group uses oil card top-ups to launder money, channeling black funds for 'pig-butchering scams' and online gambling, driving countless victims to ruin through online loans. Lin Feng's partner, an undercover agent embedded within the group, goes missing the night before passing key evidence. Tracing a dead number to an overseas server, Lin Feng discovers a mole within the police force. Every step is on a knife's edge, but he has no retreat—this battle will be a fight to the death for justice.