Synopsis Plastic surgeon Seok-Ho (Cho Jin-Woong) and his psychiatrist wife Ye-Jin (Kim Ji-Soo) host an evening dinner with their good friends. Tae-Soo (Yu Hae-Jin) and his wife Soo-Hyun (Yum Jung-Ah) are the first to arrive and are soon joined by Joon-Mo (Lee Seo-Jin) and his wife Se-Kyung (Song Ha-Yoon). Lastly, Young-Bae (Yoon Kyung-Ho) arrives late and by himself.
While the good friends enjoy a full-course dinner and alcohol, Ye-Jin suggests that they play a game. The game requires everybody to leave their cellphones out on the table. Whatever text messages or phone calls that arrive are then shared with everybody. What secrets will be revealed among these intimate strangers?