Hotaru Amemiya (Haruka Ayase) is like a "dried fish," competent and put-together at work but a lazy slob at home in sweats with zero interest in dating. She would rather "lounge around than fool around," but strangely enough, she suddenly finds herself becoming attracted to good-looking guys and having good-looking guys suddenly pursuing her… After many ups and downs she finally ends up happily married to her boss Seiichi Takano (Naohito Fujiki), the manager of her division at work, who she had been sharing a house with. And that was where the TV series ended. In the movie, Hotaru becomes a new woman and strives to become a refined lady, and the moving love story of the couple's newly married life unfolds… …Not! Hotaru hasn't changed a bit. Even as a new wife, she lounges around on the veranda of their home like a walrus. But when she finds out that her husband's dream is to spend a "Roman holiday with a loved one," she decides to go on their honeymoon to Italy. She's never traveled overseas before and frankly doesn't feel up to it at all, but since her husband seems to be really looking forward to it, she'll do this honeymoon thing for his sake!