When Charlotte McLogan finds a disturbig letter she goes to P.I. Ji-Hoon Jung for help. But as the two dive deeper into the mystery that surrounds the piece of parchment they discover that family secrets can only remain hidden for so long. As the two get closer to finding out what happened and why Charlotte's aunt disappeared, they find that some things are harder to accept then others and that sometimes misunderstandings can be deadly. Will they be able to solve the mystery or will fate inervine in the form of a jealous dame wielding a revolver?