Park Shin Hye played a role staying at home all the time. She’s an editor. Being harmed at childhood, she closed her heart and lived a normal life. One day, she began to pay attention to her neighbor, a doctor, acted by Kim Jeong San. Her biggest daily happiness is peeping him and imagining a nice life with him. The game designer with two nationalities found her peeping. The two knew each other and a series stories happened....

A science-fiction and suspenseful love drama, starring Yoon Shi-yoon and Kyung Soo-jin which takes the parallel world as the theme. It tells the story of the male protagonist who shuttles between the two worlds to expose the death of his cherished person who is killed by a serial murderer....