How to Use Guys with Secret Tip 남자사용설명서 (2013) movie with English subs

A messed-up life's woman buys a video tape named 'How To Use Guy with Secret Tips' that will change her life forever.

A 'not so attractive girl' is single and loses her chance of promotion at work. Not knowing why, she accidentally buys an old video tape set titled 'How to use Guys with Secret Tips'. May be this video can help her to get through life easier. With doubts and curiosity, she gives it as try. And Surprisingly, she gets what she wants at work and the top star LEE falls for her. But can she keep her true love?