Ataru turned into a hippo is the setup, but the real curse is watching Lum actually fight for something that matters to her instead of chasing him around for laughs. The second half drops the amusement park jokes and gets serious about whether these two can want each other instead of just orbit each other. By the end, the romantic stakes feel earned in a way the TV series barely touches.
Ataru's life takes an absurd turn when a mysterious magician at Tomobiki's brand new amusement park transforms him into a massive pink hippopotamus. What starts as a bizarre prank spirals into something far more sinister as Lum races to find the culprit and reverse the spell on her beloved Darling. Her investigation uncovers a decades-old curse: a witch, slighted by a forgotten invitation to Lum's birth celebration, swore that the alien beauty would never find happiness with her True Love. Now that curse is actively sabotaging their relationship, and the magician seems connected to something much larger than a simple theme park attraction. As Lum digs deeper, reality bends in increasingly weird ways. The line between magic and science blurs, old grudges resurface, and the gang finds themselves caught between supernatural forces and their own chaotic nature. What should be a straightforward rescue mission becomes a race against a curse that's been waiting years to ruin Lum's chance at love. Absurdity and genuine stakes collide in a wild ride through romance, revenge, and the unpredictable chaos that defines Urusei Yatsura.