When a mysterious app installs itself on her phone, Sung-Ah gains the ability to see people’s affection levels like a dating sim. Bright, bold, and always in control, she has no trouble steering her relationship with Haewon, whose affection for her is already off the charts. Maxing out his affection? Easy. But there’s one thing she can’t force. No matter what she does, the “Intimacy Event” won’t trigger. Now it’s up to her to turn the tide of her romance.