Mary Stayed Out All Night Synopsis: Mary Wi is a wanna-be eco-friendly designer, but she did not major in design, is not qualified and has no social connection in that field. She is cute looking, just like her late mother, but she is short-tempered like her dad. Mary's dad believes that there's no man who is trustworthy and he insists that he will pick Mr. Right for his daughter. Though they always quarrel, Mary is daddy's little girl and thinks her father is the best. One day, Mary goes to a glam rock concert and there, sees a pretty looking but rough rocker, Mu-gyul who sings like there's no tomorrow....