Mi-ho fails to find the USB and to meet the one who sent the text. But she finds Jung-ah’s lipstick on the floor and becomes suspicious. One day, Mi-ho coincidentally finds the USB and discovers the "Pandora’s Box" folder inside. Meanwhile, Na-young sees Tae-ho and A-ra having an affair and decides to seek revenge. Right then, someone sends an anonymous letter to the bank, exposing Mi-ho’s past.