The cast of "Black Sugar Macchiato" mainly consists of Zhuang Haoquan, Yang Qiyu, Liao Yiru, Wu Yingjie, Zhan Ziqing, Liu Yungjia and Lin Ke'en.
Ao Dog, Prince, Fabien, Jie, William and Wei each live in a different family, and they all think they are only children. On this day, their father's secretary recruits the six to a lawyer's office and tells them that they are actually half-brothers and that they are to live in harmony for one year, and that if they fulfill the contract they will be given a $10 billion property. The six brothers don't know each other, and the sudden news is too much for them to handle. Fabien immediately chooses to leave, but the contract stipulates that if one of the six fails to fulfill the contract, it will be declared null and void, and the remaining five try to dissuade Fabien at the lawyer's urging. After signing the contract, the group is put up in a house where their housekeeper is a girl, Maiden, who was adopted by her father in his early years. While fulfilling the various harsh provisions of the contract while stumbling along, the six brothers live together ......