Nayeon who's trying to remember her life before she gets into an accident 3 years ago met Dahyun, the woman she saw crying at the hospital. What will happen when they meet again but Dahyun doesn't want her to be around?
After cheating on Jeongyeon, Nayeon attends a friend's wedding and sees Jeongyeon for the first time in nearly two years. She learns from her friends that Jeongyeon lost her memory shortly after their breakup. As Nayeon keeps their past a secret, she finds herself falling in love with Jeongyeon all over again.
Will Nayeon keep their past love hidden, or will the truth ruin everything?