As Kai spends more time with Lu, he finds he is able to tell her what he is really thinking, and a bond begins to form. But since ancient times, the people in the village have believed that mermaids bring disaster and soon there is trouble between Lu and the townspeople, putting the town in grave danger. Winner of the Grand Prize at the prestigious Annecy Animation Festival and an official selection of Sundance 2018, Lu Over the Wall is a toe-tapping, feel-good demonstration of Yuasa's genre-mixing mastery that will leave you humming long after the film has ended.