The sales department of Tianke hides a walking fortune-seeking koi named Xu Yiling. He has a fortune-defying physique and doubles his luck. Singing a song to bring wealth can even increase his wealth-recruiting ability. He is recognized by the company as a magic tool for signing orders. However, this ability comes at a great cost. Every time he uses it, he has to suffer the backlash of a serious illness, but he always steps forward at critical moments, thinking silently in his heart. "I can help everyone keep the order, so the backlash is nothing."
