A Costly Letter

In an auction, Ye Ye spends 50,000 yuan on an envelope from an air crash dating back more than 50 years. Inside the envelope is a letter that was never opened before. The letter indicates the whereabouts of a box of gold bars. This action attracts the attention of three men: one is Ye Ye's ex-boyfriend; another is a a young man from Taiwan; and the last is the owner of a stamp shop. All three want to get this letter from Ye Ye, so a battle of wits and courage begins to take place.