Why everytime it rains you feel down, broken, anxious? You don't know, you can't remember anything from your childhood, your parents, nothing. When you was 10 you moved to Seoul to your grandparents from your mother's side. You don't know what happened before or why you are with them. They just keep changing subject when you ask them about your past or your parents or just tell you that they will tell you someday when you will be mature enough to understand. You only have one thing which reminds you your parents and your past... a simple ring. With graving that has a missing part. You wear that ring on a necklace on your chest and treasure it like your life depends on it.