Kai, a talented but aimless young musician, finds joy in writing songs and uploading them online. His life takes an unexpected turn when he joins a band with his classmates and a young mermaid named Lu appears at their practice sessions. Lu's singing has a mesmerizing effect on humans, causing them to dance uncontrollably. As Kai spends more time with Lu, he forms a deep bond with her, but their relationship is threatened by the villagers' ancient superstition that mermaids bring disaster.

Lu Over the Wall
A young student's ordinary life is transformed when he forms an unlikely bond with a mythical mermaid, infusing his world with enchantment and delight.