Based on a Korean folk tale. Made entirely with iPhones. The Guardian has more details about the film, including this summary:
Paranmanjang, which means "a life full of ups and downs" in Korean, is about a man transcending his current and former lives. He catches a woman while fishing in a river in the middle of the night. They both end up entangled in the line and he thinks she is dead. Suddenly, though, she wakes up, strangles him and he passes out. When the woman awakens him, she is wearing his clothing and he hers. She cries and calls him "Father".No subtitles available.