After watching this drama i came to know more about society's evil deeds and school bullying.Yes,school bullying is such a huge problem.it have to be taken care.And the realistic fact i learned from this drama is that the parents are the only one who stands for you in any circumstances of your life.no matter how much trouble we give to them they'll endure it stand by our side.coming to this drama,the story plot is strong and revealing of mysteries by one by one makes the viewers excited and stick to this drama.strong acting of every character.Especially park in ha[seon ha's mother]acting was wonderful,hats off. every time she cried i also cried.and soo ha is my favorite character in this whole drama.such a bold and daring character. i like her.this drama is so good.And another thing i came to know is that when something tragic happens to their child moms can change to detectives as well as murderers.moms are the best.anyway,try this drama,only if you like melodramas.