“If only you’re just like your older sister. "

That’s a line that Krystal Jung had grown up hearing her whole life.  No matter what she does, she is always compared to her genius sister, Jessica Jung. Unlike her feminine sister who excels at everything, all Krystal could do is angers her parents. Why won’t anyone notice her?

Then she met the clumsiest person in her life, Nam Woohyun. Although he always wears his geeky glasses and creepy grin, she couldn’t stop herself from getting captivated by his silly charms.