The Dead Man's Debt.

After his grandfather's death, the protagonist receives a 300,000 yuan debt call from a private hospital. He confronts them with the death certificate, but faces arrogant obstruction. The protagonist pretends to pay, calls police, falsely claims kidnapping, and live-streams evidence. This unravels the hospital's dark secrets: forged documents, corruption, fake drugs, and bribing backers. Villains are brought to justice, and medical industry chaos is rectified.