Jessica has been living the perfect-married-life for nearly five years now. She has never been happier and more content in her whole life than now -- she's married to Onew, the perfect husband who does the sweetest things she'd ever seen, and they have an angelic son, Yoogeun, who wipes away her exhaustion and depression with a single smile.

Things were going smoothly until they meet this one person who ruins everything.

Will Jessica be able to save her marriage?