S1, E6: People suspect that there's something odd with Bo Mi. She's been acting up at work, and people really think she hasn't been herself. The same applies to Bom on her side of the switch-ups. Things were seen to be going smoothly as they thought, but that's when Bom gets an itch in the middle of a 9 o'clock news broadcast. Catastrophe arises when she gives in to the itch by the newsroom.