A secret romantic thriller of a show-window couple in their third year of an arranged marriage, which started with a threatening phone call! There’s a perfect-looking couple, like a painting. The man is a spokesperson for the president’s office, and the woman is a sign language interpreter. Both of them convey what others are saying. But when it comes to their own feelings, they don’t speak up. Even though they’re a married couple closest to each other, they don’t talk at all. One day, this couple, who had cut off all communication and emotional exchange, gets a chance to smash their sturdy showroom window. And the one who gives them that ‘opportunity’ is none other than a threatening phone call...! Ironically, a blackmailer who knows a secret only the couple shares comes between them, making them discover sides of each other they didn’t know and finally speak the hidden things they couldn’t before.