“I'd recognize him at a single glance, no matter what he looks like now.” Yeon-hwa, a senior in college, lives her life while holding onto Sunwoo, her first love, deep inside her heart. One day, she gets into a traffic accident, where she gets to meet Troy, vice president of the Hangun Corporation. From then on, Troy falls for Yeon-hwa. Troy's reserved but passionate romanticism reminds Yeon-hwa of Sunwoo, which confuses her heart. Meanwhile, Troy seems to be concealing some secrets...