Life, death and second chances take center stage in this story about three people whose intertwined destinies travel through space and time with haunting results. It’s the 1980s and Detective Cha Hyung Bin has devoted his life to criminal justice, and his heart to Ha Eun, a bookshop owner suffering from heart disease who keeps her illness a secret. But Cha Hyung Bin isn’t the only one pining after Ha Eun: serial killer Gong Ji Chul has also fallen in love with her. Their lives collide with tragic results, but 30 years later, they’re reincarnated and fate brings them together again. The more time passes, the more their new lives become tangled in the devastating web of history. Will they manage to escape the past, or be forced to come face to face with it?

Even though Seo Dong Hee comes from a poor family background, she has a bright and positive personality. She dreams of becoming a designer and slowly works her way to achieve her dream. She decides to become the mother of her nephew and raise him by herself. She also gets involved with Kang Cha Yeol. Kang Cha Yeol’s father runs a big company. His father wants him to work for his company, but Kang Cha Yeol doesn't want to. He wants to go back to the U.S., but he realizes he can't do anything without his father's financial support. His father tells Kang Cha Yeol to work for 1 year at his company.

Chilsung School is for troubled kids. One day, a strange and bleak mood surrounds the school. The teachers turn into zombies. The kids must struggle to stay alive.