It is such a drama that it's perfect to me. If you are a fan of Reply series then this drama is what you need. Every character is beautiful. A nice and heart warming story. I fell in love with Jung kyung ho , Park hae soo and with every actors of this drama. It shows the prisoners are not always the trash one. They are also human and they are also guilty for what they did. But there are a lots of bad people in the prison. So it's a drama which kept the reality like human greed, love etc. I will definitely recommend it to everybody, just give it a try.