The famed P.I. works to uncover facts of the death of a wealthy socialite whose two grown children are accused of murdering her. Complicating matters are Rockford's omnipresent "friend" Angel, and Rockford's ex-wife Kit, a lawyer who represents the children.

齐藤道雄（小日向文世 饰）是一位小有名气的剧作家，他的好友大介（生濑胜久 饰）即将和美国女友罗拉（Morgan Snyder 饰）结婚，为了参加他们的婚礼，道雄千里迢迢来到了洛杉矶。为了庆祝大介最后的单身时光，道雄和大介驱车走访了很多酒庄，道雄得知，自己留学时的暗恋对象田中麻有子（铃木京香 饰）在著名的产酒地纳帕生活。机缘巧合之下，道…