The story of Yeon-Hee who appears to be having a happily married life but is actually experiencing domestic violence. Little by little, Yeon-Hee begins to fall into danger after her SNS account was hacked.

Yeon-Hee's SNS account was hacked At first, Yeon-Hee disregards this as a trivial happening, until matters worsen. A suicidal post is uploaded, and Yeon-Hee's life faces turmoil. However, Yeon-Hee fails to convince the account administrators and authorities of its severity. Out of frustration, Yeon-Hee turns to Ui-Chan for help, an high school classmate who is now a police detective. Shortly, Yeon-Hee disappears and her husband receives an insurance windfall. As soon as the insurance money pays out, Yeon-Hee's husband is found dead. As the tables keep turning throughout a series of peculiar events, Ui-Chan gets a strange feeling. The post on Yeon-Hee's social media account suggesting her death... Yeon Hee's accident... her husband's death... What clue is Ui-Chan missing ? Who is the mastermind behind all this?