A hospital coordinator, Ga-Yeon, fell in love with a doctor at the hospital she was working in and they had an affair even though the doctor was a married man. But when the director found out, she was fired. For over a year she tried to find another job, but her mental uneasiness eventually made her give up and she became a recluse.
A year later, in the spring of 2013, her younger sister, Hye-Na, and her first love Yun-Woo come to her.
A story about the dark side of today's youth and pretty serious everyday life happening around Ga-Yeon.