On the day of the total eclipse, four couples with different stories finally find their true love. Se Jin is head-over-heels for his girlfriend, Joo Won. But he is worried his otherworldly Joo Won may disappear one day, and he will be left all alone. So Hyun falls in love with Ji Woo, a senior in college who is heartbroken by another girl. So Hyun asks Ji Woo to teach her how to drink as an excuse to spend more time with him.
Jung Suk and Soo Jung are a workaholic couple who are struggling to start their relationship as Jung Suk is still not over his dead wife. And Jin Man, who has been on a free-hug campaign around the world, returns to his homeland in 6 years to meet his former girlfriend. The only key to finding her is the cell phone number he had 6 years ago.
