The first trailer for the live-action The Little Mermaid movie is here, and it looks breathtaking. Based on Hans Christian Anderson's fairy tale rather than the Disney movie, this new take follow a young girl (Loreto Peralta) who discovers a beautiful, enchanting woman who she believes is the real "Little Mermaid." The girl's older brother Cam (William Moseley) is a reporter, and travels with his sister to a small town in Mississippi to find the maybe-mermaid in question, who is played by Downton Abbey 's Poppy Drayton. Shirley MacLaine features prominently in the trailer as a mysterious woman with intimate knowledge of the Little Mermaid's story. The Little Mermaid will be released later this year. Follow Marie Claire on Facebook for the latest celeb news, beauty tips, fascinating reads, livestream video, and more.