As a successor to the most mysterious family in United States, Leon has to go through a set of trials before inheriting his family wealth according to a group of rules. It has five stages. Since he was only three years old, Leon's father has planned on raising him as a tough person. He invited masters of diverse expertise to train Leon in many abilities, starting from arts, medicine, feng shui, ancient foreseeing techniques, self-defense, and ancient antiquities. Four years ago, when the first phase of the exam started, Leon was sent to live in Oregon's harsh city without a single penny. Leon also wasn't allowed to use the different expertise thought to him by the experts to train his willpower and experience the life of an ordinary man. Leon understood his father's goodwill. His family did all this to avoid unwanted circumstances; even simultaneously, they are also grooming his cousins as potential replacements.