Soo-jung is camping on Jukdo Beach, while Jung-yong has left there for a long time and returned. Soo-jung and Jung-yong inevitably meet surfing on the beach. Besides, Jukdo Beach, which emerged as a surfing hot place, gets sick and tired of the heat as time goes by and the girl surfer Beezoo is finally destined to leave there.
A young woman follows a mysterious melody onto a remote tidal island. When she crosses back over at the next low tide, she emerges into a world where 25 years have passed.
