Based on a true story, this inspiring made-for-TV biopic spotlights Canadian swimmer Marilyn Bell (Caroline Dhavernas), a 16-year-old phenom who defeats top-ranked American swimmer Florence Chadwick (Claudia Besso), stunning the world in the process. In a thrilling race across frigid Lake Ontario, Bell's perseverance and pluck help her make it to the other side while her seasoned competitor struggles.