Female undercover detective uncovers the time and location of criminals' transactions, arresting them at the scene. She drags the suspects to an underground detention room, interrogating them on whose orders they were acting. However, the criminals refuse to reveal the hiding place of the contraband. At that moment, the female detective's eyes sparkle and a smile forms on her lips. Their silence was fully expected—she is a professional who excels in the art of ○ torture. Wet with excitement at having finally captured fresh prey, she slowly begins torturing the criminals. Those who still refuse to confess become victims of newly devised ○ torture techniques, serving as experimental subjects to satisfy her sadistic pleasure. In the end, they are even forced to eat gold, marking the perfect conclusion to her flawless torture session.