It all starts with a simple lie. The lie leads Yu-Mi (Bae Suzy) to live a completely different life. Her husband is Ji-Hun (Kim Joon-Han). He is an ambitious man, who pursues a goal-oriented life. Yu-Mi is friends with Ji-Won (Park Ye-Young). Ji-Won is the only person Yu-Mi can trust and rely on. Meanwhile Hyun-Joo (Jung Eun-Chae) enjoys her superior life, without any considerations or malice to others.