An American child falls overboard an ocean liner and washes up in Japan. He is prophesized to be the child destined to lead an elite group of Japanese warriors. The child grows up and is named Haru, but is hardly brave or skilled – he's fat, clumsy and not too bright. One day, Alison Page hires Haru to protect her from her criminal boyfriend and his Yakuza associates. When she disappears, Haru finds a matchbook that says "Beverly Hills" and decides to try and find Alison there.