Watch Double Helix for Free: How to Stream the Movie Online at 123Movies. . Late at night, KONG Xianyun and her younger brother Yuanyuan escape from their family house. They trek into an abandoned school, where Yuanyuan’s memories are awakened – the sound of books, piano, and laughter. Fire! Fire! Fire! Fire engulfs everything. Adapted from The Song of Life by the worldrenowned sci-fi writer WANG Jinkang, this speculative short contemplates on the future of AI. Soaked in a never-shredding atmosphere and accompanied by the secret tune of a piano, DOUBLE HELIX tells a gripping story of intelligence robot, family trauma and a pair of run-away siblings who trek into an abandoned school.