One unexpected choice can change everything about your life. Cha Joo Hyuk works at a bank and has been married to Seo Woo Jin for five years. When a strange incident happens one day, Joo Hyuk makes a decision that impacts his life and those around him in unexpected ways. Suddenly, the life he had with Woo Jin and his best friend, Yoon Joong Hoo, are gone and he is leading a very different life. How will his first love, Lee Hee Won, factor into his new life? And will it be possible to get his old life back?