Tsukina's father stole money from her as a child to use on gambling, and as well as her older brother for being cold to her. She developed a huge annoyance for men,begging her mother to let her go into an all girls school.Now her father had sold their house which forces Tsukina and family to end up living with her mom's rich friend,and her FOUR SONS. The two mothers have some plans in store for Tsukina and the four sons!Let the Marriage Operation before romance commence!