離別在悄悄地逼近，然而他們卻仍未察覺... 而對世界上最愛的那個人。他們開始了美麗的告白這是一部結構獨特的電影，穿插交織著離別的故事，看似分開卻又互相關連...... "我愛你" " I love you " - 在一生中最幸福的時刻，他們遭遇離別三十岁的消防官Jin-woo和可愛的女孩Su-jeong,去挑選情定一生的戒指。 "請理解" " I understand " - 戀人分手的那一刻，流下悲傷的眼淚三年貧窮的愛情使Ha-suk和Suk-hyun終於疲憊不堪... "謝謝你" " Thanks " - 初戀轉瞬即逝，卻有了再去愛的勇氣心中滿是傷痛的Su-eun，跟在Sang-gyu身後夢想著跟他一起嘗試初戀。 "對不起" " I'm sorry " - 心愛的孩子，媽媽不能總是跟你在一起八岁的Hui-chan十分留戀妈妈的懷抱，但媽媽Ju-young卻總是很忙，於是她跟她媽媽目前正在戰爭中......。

They were caught unaware as separation crept nearer and nearer, slowly but steadily. Facing the ones who own their hearts, they made a beautiful confession. With a fantastic structure, four stories of separation are interwoven beautifully into this film. A 30-year-old fireman chose a ring for his girlfriend, keping to be with her forever. A young slacker and a deep-hearted women see their long-lasting love start to grow cold. Dreaming of first love, a deaf woman who hides a wound on her face pursues him form behind. An 8-year-old boy, who longs for his mother’s embrace, locked in battle with his always busy mother.