Yong min is a playboy who is loved by every woman. He has a woman named Taiyan, and he loves her deeply. However, due to his playboy habits, she broke up with him and had a heated argument during the process, which led to Yongmin's blindness. He met and married a woman named Xiuai, but he lost all his sexual desire and vision, making it difficult to maintain a good marital relationship with her. Then one day, Ho yeong and Soo jeong walked over to them, and Soo ae had a kind of worship for Ho yeong...
传说中的宝藏，可以实现持有者的所有愿望——圣杯。获得圣杯的仪式被称为圣杯斗争。参加圣杯竞赛的圣杯选出的七名魔术师被称为领主（英语大师），他们与七名被称为仆人（英语仆人）的魔术师签订合同。他们是被圣杯选中的七个灵魂，分为七个等级，被召唤为恶魔。
