Jung Da-ae and Lee Han-eol became sworn enemies because of a misunderstanding that happened 8 years ago.
To make things worse, these two of them are in-law-to-be, whose children are about to wed!
But somehow, the bride and groom are killed.
Da-ae and Han-eol are killed while mourning and still arguing in the middle of the road.
That is when they are transported back in time, to when they were in high school!
Do they get a second chance to make things right?