在大都市的外围，有一个生意冷清的蛋糕店，可谁也不知道这个蛋糕店竟是一个叱咤风云的黑道老大所开，这位老大是昔日里人称第一杀手的血联捍卫队队长，现在的他早已退出江湖，回归到了正常的生活之中，而他的妻子玛亚也因一场车祸离世，为了纪念他的妻子，他便以他的名字命名了这家蛋糕店，跟随他一起的，还有他昔日的两个小弟，他们三个人没有一个人会做蛋糕，有的只是来了客人以后把他们吓跑，但是这一天突然迎来了一个女大学生千惠，而千惠则是玛娅和前夫生的女儿，他的到来使得黑帮老大还有蛋糕店的生活完全发生了变化，千惠的生父曾经是日本企业中的董事长，但由于投资失败，卖掉资产之后便跑路了，留下了千惠自己，无奈的千惠只得来寻求妈妈的帮助，但是知道妈妈离世之后千惠却又不知道下一步的生活该如何是好，就这样他与黑帮老大之间的生活便开始了

In the outskirts of the big city, there is a cake shop with a deserted business, but no one knows that this cake shop is actually opened by a powerful mafia boss. , this boss is the captain of the blood federation defense team who was known as the number one killer in the past. Now he has already retired from the arena and returned to a normal life, and his wife Maya also passed away in a car accident. In order to commemorate his Wife, he named this cake shop after him, and he was with him, as well as his two former younger brothers. None of the three of them could make cakes, and some of them just scared the guests away when they came. , but on this day, a female college student Qianhui suddenly ushered in, and Qianhui was the daughter of Maya and her ex-husband. His arrival completely changed the life of the gang boss and the cake shop. However, due to the failure of the investment, she sold her assets and ran away, leaving Qianhui alone. Helpless, Qianhui had to seek help from her mother, but after knowing her mother passed away, Qianhui didn't know what to do next. That's right, so the life between him and the gang boss began