In-ha's son Seo Joon ( Jang Keun-suk) is a photographer, and he bumps into Yoon-hee's daughter Jung Ha-na ( Im Yoon-ah) by chance. He has never gotten over his first love, and when he runs into Yoon-hee ( Lee Mi-sook) after so many years, the two reconcile and look forward to making up for lost time.
In 2012, In-ha ( Jung Jin-young) is now unhappily married to Baek Hye-jung, one of Yoon-hee's former best friends. It takes time for the hesitant pair to finally voice their feelings, but circumstances beyond their control send them down different paths.
It's love at first sight when Seo In-ha ( Jang Keun-suk) and Kim Yoon-hee ( Im Yoon-ah) meet as shy university students in the seventies.