A love story between a couple in their early thirties. It’s the story of two people who live in the same era but in different worlds.

Oh Yun Joo (Han Hyo Joo) is a surgeon whose father is a famous comic book creator. One day, her father goes missing and she rushes to his workshop to look for him, and instead finds a strange man, Kang Chul (Lee Jong Suk) bathed in blood. She is kidnapped by him and taken to a different dimension.