When 22-year-old Y/N returns home early from college, she finds her parents gone on a last-minute trip and stuck staying with Cole — her dad’s oldest, most trusted best friend. At 46, Cole is rugged, wealthy, and known for his dry wit and constant line: “You can do better.” But with their stay unexpectedly stretched to six full days alone in his sleek 32nd-floor apartment, the line between “protective family friend” and something far more dangerous begins to blur. What Y/N never realized is that Cole’s criticism was never about her choices — it was always about him. As tension ignites into hidden feelings and fierce possessiveness, Y/N discovers the truth: he didn’t mean she could find someone better. He meant he is the better. A slow-burn love story of secrets, long-held desire, and one undeniable claim: You are mine.