During the Joseon Dynasty, lowborn Chae-sun challenges the rule that states only men allowed to sing while navigating devotion to her teacher and the demands of the king’s father.

In a world where an AI programme allows people to communicate with their deceased loved ones, a flight attendant and a mother question the meaning of reality and humanity.

A group of unlikely heroes from across the Korean peninsula try to save the day after a volcano erupts on the mythical and majestic Baekdu Mountain.