Han Dong-joo and Lee Da-ji were childhood friends who fell desperately in love and married at 19 after struggling to get their parents' approval. But they divorced after six months. Six years later, they meet coincidentally at a horse auction in Australia. When Dong-joo, the grandson of a tycoon, goes to Jeju Island to develop a resort, he ends up living with his ex-wife, who is now a horse veterinarian. They discover that their feelings for each other are still very much alive.