Lee Gang Doo and Ha Moon Soo are the survivors of a major shopping centre collapse. Ten years on from that tragic day, the incident still exerts a powerful influence on their lives and seems to have bound them, by the most classic of red threads, to a shared destiny that is about to bring them together, albeit under unlikely circumstances. The two seem destined to meet, perhaps so that each can help the other heal their wounds and traumas, and thus try to start living again.