《달의 연인 - 보보경심 려》 or “Moon Lovers: Scarlet Heart Ryeo” is a very popular and one of the highly-rated Korean Drama since 2016. It stars IU as “Go Ha Jin” and “Hae Soo”, Lee Joon Gi as “Wang So”, Kang Ha Neul as “Wang Wook”, and Hong Jong Hyun as “Wang Yo” as the leading characters.

In 2050, an organisation called Alice was formed to help those grieving achieve closure by traveling to the past of a parallel world. Soon after rumours about a Book of Prophecy, which predicts the end of time travel, reached Alice. They sent two agents into 1992 of another world to retrieve the Book but another group got to it first.