”When That Phone Rings” Yoon Yeon-seok and Choi Soobin enter into a contract marriage... A romance thriller that begins with a threatening phone call

Three years ago, Choi Soobin and Yoon Yeonseok got married by contract. On the 22nd broadcast of MBC TV series "When the Phone Rings", Hong Hee Joo (Choi Soobin) and Baek Sao
The story depicts the contract marriage of Hong Hee Joo (Yoo Young Seok) and Baek Sa Eon. Three years ago, when Baek Sa Eon visited the bride's waiting room and saw Hong Hee Joo in a wedding dress, he said, "Take it off.
It's not yours, so why did you wear it? The wedding will be handled privately.
From now on, you will never act as my wife in front of people,” he said calmly.
He continued, "It's a marriage vow. You don't have to read it all, just remember this. A wife cannot ask for a divorce first. Especially not during a presidential election.
"As Baek Sa-eon's wife, I will not reveal my name or face to the public. If I violate any of these terms, the penalty will be 2 billion won," he explained, handing her the documents.
Hong Hee-joo quickly signed the document, and Baek Sa-eon said, "Give up the illusion that we are a married couple. You have been sent to my side as a hostage."
Meanwhile, "When the Phone Rings" is a secret romance thriller about a married couple in their third year of a contract marriage that begins with a threatening phone call.