In 2012, In-ha (Jung Jin-young) is now unhappily married to Baek Hye-jung, one of Yoon-hee's former best friends.
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.
Gradually their feelings develop, and Joon and Ha-na fall in love.
Unaware that their children are dating each other, Seo In-ha (Jung Jin-young) and Kim Yoon-hee (Lee Mi-sook) announce that they are getting married, which will make Joon and Ha-na step-siblings.
Im Yoon-ah and Yoo Hye-ri were costars in the television series You are My Destiny (2008) and Cinderella Man (2009). The first day's shooting for the '70s' era took place at Keimyung University in Daegu, South Korea.
Love Rain also featured non-Korean background music, such as "Verden Vil Bedras" by Sigvart Dagsland in episode 6, and "(Where Do I Begin? Also the song "Vem Vet" by Swedish singer and songwriter Lisa Ekdahl is used several times during the series.
But due to the Korean Wave appeal of its lead stars Jang and Im, of all the Korean dramas sold abroad for 2012, Love Rain went for the highest price to Japan before it was even broadcast in Korea.