As in the neighborhood of nineteen years old, Mina struggles to make her life better as she lost her parent when she was eight years old. She lived with whom kids name mother Rita who has taken care them from orphan home .She had graduated from her high school and need money to achieve her dream being surgeon(doctor). She hates her current life as she need to find a lot of part time jobs for paying her study fee. One day when she was called for an interview, she was into car accident causing her to unawakened and tripped to another world what she called as 'Mystery world' brought by grim reaper named Katz. She makes a contract with him and was told to be there 2 years for substitute with someone who look like her. When she arrives there, She got weird feeling that she is the richest woman in that world than her real world. She could see her looklike parents , afford to buy any expensive things and further her study. Then,after all she spends her time there she learn many things that rich is not everything in life. What is happen to her later? What she learn through her new life?