Young Lynn and her mother travel from Japan to meet Lynn's father, Viscount Marble, who lives in England. On their way to the Marble Mansion, Lynn and her mother get into a tragic car accident in which Lynn's mother is killed. When Lynn wakes up in the hospital, the truth about her mother's death is kept as a secret from her since her father cannot bear to bring her such grief. Soon after Lynn moves to her father's care to the Marble Mansion where she encounters a miscellaneous cast of servants, most of who are charmed by Lynn's adorableness. Lynn also finds out that she isn't the only child of Viscount Marble – she meets her elder half sister Sarah, whose mother has also died. At first Sarah seems cold and distant towards her, because she fears that Lynn's open and cheerful personality will win over the attention of their father as well as the two handsome young Brighton brothers who l