Ohn Joon Young (Seo Kang Joon) is a meticulous and uptight college student who never deviates from his perfectly programmed routines. In other words, a young model citizen of society.
Lee Young Jae (Esom) is an honest, spontaneous and emotional woman who dropped out of college and started working as a hairdresser's assistant. She loves to live her life in absolute freedom without programmed routines that tie her down.
Destiny had in store for this unlike couple a complete surprise. That both of them would end up together on a blind date. Twelve years later, they managed to find each other yet again... What will be the future of this young couple together after meeting again twelve years later?