Tempting Heart.

When Nini gets her hands on what she thinks is a pebble, she decides to keep it and forgets about it. Little did she know it was actually a priceless rough diamond that belongs to a big mafia boss. When she starts being chased by those who are after the diamond, the only person who can protect her is Nakan, the man who broke her heart three years ago. Nakan's case requires a believable decoy, so he and Nini must team up. Their relationship is supposed to end when the case is closed, but Nini has a few tricks to pull.