Lee Roo-Ri tries to get a job with a big company, but she gives up. She doesn't get along well with her father, who is very strict. Lee Roo-Ri decides to run away by going to a different country. There, she meets Jung Tae-Yang, whose motto is "YOLO" (You Only Live Once). He travels the world and puts his happiness first, but he also has a deep emotional scar. Lee Roo-life Ri's takes a turn when she meets Jung Tae-Yang.