The Melody of Two Lifetimes
YN is a brilliant yet introverted music historian researching lost melodies from the Joseon Dynasty. One night while exploring an ancient library, she discovers a dusty journal containing lyrics to a mysterious lullaby never heard before. As she hums it, visions flood her mind-flashes of a past life where she was a noblewoman, and a faceless man kept appearing in her dreams.
Kim Taehyung, a globally famous idol known for his soulful music and artistic nature, begins experiencing dreams of a girl in hanbok crying in the rain. He starts composing music based on the dreams, and the lullaby he hums turns out to be the exact one YN found.
Their paths cross during a historical music exhibit Taehyung sponsors. When YN hears the song he's composed, she freezes-it's the same melody from the journal. Slowly, they uncover that they were lovers in a past life, torn apart by betrayal and war.
Now, in this life, fate gives them a second chance-but something is still hunting them: the curse that kept them apart centuries ago. As they try to break the cycle and fall in love again, they must uncover who betrayed them in their past life... and if that enemy is reincarnated too.