In the 2017 fantasy romance drama While You Were Sleeping, a young woman with the extraordinary ability to foresee future events through her dreams finds her life intertwined with a prosecutor who shares her unique gift. The story centers on Nam Hong-joo, a reporter whose prophetic visions have made her life a cautious, lonely existence, and Jung Jae-chan, a principled prosecutor who becomes the reluctant recipient of her unsettling premonitions. When their separate dreams converge on a single, dangerous incident, they are thrust into a desperate race to alter the fates they have seen. As they work together to prevent tragic outcomes, they uncover a complex web of secrets and a connection that binds their pasts. Blending supernatural elements with legal thriller intrigue, the series explores themes of destiny and free will. The compelling narrative is anchored by the chemistry between Bae Suzy as Hong-joo and Lee Jong-suk as Jae-chan, alongside Jung Hae-in, creating a suspenseful and heartwarming tale about the power of changing one's future.