An Ran's casual act of kindness spirals into an unexpected entanglement with a mysterious, cold-hearted man determined to repay his debt. When she protests her youth and insists she wants nothing from him, he calmly responds: "Then I'll wait until you're ready." Yet his devoted pursuit clashes starkly with his notorious reputation—a supposedly aloof, frost-like figure rumored to be as unyielding as the ice king himself. His dramatic mood swings and theatrical displays of affection paint an entirely different picture. His close circle watches in disbelief as their famously stoic companion transforms into a clingy, attention-demanding partner. Friends exchange knowing glances, wondering if they've somehow gotten the wrong person back. Between constant jealousy, abandoned hangouts, and relentless displays of couple intimacy, they're left asking one simple question: can we trade him in for the original version? A tale of unexpected romance where a guarded heart surrenders completely, and a woman discovers that beneath the glacial exterior lies someone willing to move heaven and earth—even if it means embarrassing himself in front of everyone he knows.