Kwon Jiyong, the arrogant law student and heir, a typical happy go lucky playboy who doesn't care to any one. He's the sole successor to a huge and famous business empire Kwon Group of Companies and a talented ice hockey player. Only in reality, he's living in a lonely life. Not until he meets Sandara Park, the new food assistant at their school canteen.

Sandara Park grows up surrounded in luxury until a sudden car accident leaves her family devastated. With resilience and optimism, she manages to overcome her fate and create a happy life. But then another life-changing crash introduces a new force of nature: notorious playboy Kwon Jiyong. Unfortunately Jiyong suddenly has to go through a major brain surgery, which causes him to lose his memory. His mother forces Dara to leave him and the latter has no choice but to do so. Little does she know that she already has a Jiyong's child growing inside her.

Six years pass. Dara lives a quiet life with her young son DaiJi Park in the countryside while Jiyong is now a successful businessman and a lawyer who owns the most well-known and famous law firm. He's engaged to Tiffany Hwang, the kind and beautiful doctor, who took care of him after his surgery.

Through their son Daiji and with the strangely familiar piano piece stirs Jiyong's heart as he struggles to recall his past romance with Dara.

Well the past saved him from longing?

Well they be able to find their lost love?

Well be the next stop is their happiness?