We know how it ended, but how did it begin?   These are snippets of Seo Woo Jin and Cha Eun Jae's lives as students in medical school, dealing with the same things as everyone else: cramming for exams, earning some money, trying to please their parents, and falling in love.  

When fate brings two closer than they expected....

He waited... for her to be back. 

Two met in medical school. Two drifted apart but never once forget each other. 

He left to prove he could have a better life, he left to a place without her. They met again but he's forced to go, again? 

The past they carried on their shoulders. The past that made them cross one another at the junction. The future at a place where no one knows whats gonna happen next.