Joo Ye Eun had a perfect life - having a good career, boyfriend and friends who always stay by her side. She lacks nothing but why does she feel empty? Later she finds her boyfriend cheating on her with her colleague, how will things evolve from here?

A devastating accident lands Eunha Seo in the hospital. Mysteriously, she wakes up 12 years younger in her 22-year-old body. Life has given Eunha a second chance, but this is not the life she remembers. Memories blur with reality as she navigates the unfamiliar friendships and romances of this parallel time. Like a surreal game of “what if?,” Eunha is torn between the excitement of a new past and a longing for the life and love she once had. Will Eunha ever find solace? Only time will tell.