A decade ago, Aerin left the city, leaving behind memories she thought time would erase especially those of Taeho, her first love. Now, she's back, standing in the same park where it all began, where their love story bloomed and eventually shattered. Taeho, once the boy who stole her heart, is now a man haunted by unanswered questions and unspoken regrets. Fate brings them face-to-face again, reopening old wounds and reigniting feelings neither of them have forgotten. But with a history full of misunderstandings, heartbreak, and mistake, can they rewrite their story, or are some loves destined to remain in the past?