Jae-young and Soo-hyun matched on a dating app called [Destiny]. By the third year of their relationship, frequent conflicts start shaking them. When "Do you want to check the expiration date of Han Jae-young and Kim Soo-hyun's relationship?”, the push notification about this exhausted couple’s relationship expiration date from [Destiny] appears, both Jae-young and Soo-hyun hesitate to go ahead and see the date or not. Would they end up checking the expiration date? What would you do?

Su-young, a police detective who went to prison for someone else, is surprised when a mysterious woman named Yoon-sun arrives to collect her on her day of release. As she discovers that the promised compensation for her time behind bars has vanished, Su-young embarks on a mission to reclaim what rightfully belongs to her.