Running rum during Prohibition, she'll risk her life-and her heart. Motherless and destitute, Frieda Hope is determined to make a better life for herself and her sister, Bea. The girls are taken in by a kindly fisherman named Silver, and Frieda begins to feel at home on the water. When Silver sells his fishing boat to WWI veteran Sam Hicks, thinking Sam would be a fine husband for Frieda, she's outraged. But Frieda manages to talk Sam into teaching her to repair boat engines instead, so she has a trade of her own and won't have to marry. Frieda quickly discovers that a mechanic's wages won't support Bea and Silver, and is lured into a money-making team of rumrunners supplying alcohol to New York City speakeasies. Speeding into dangerous waters to transport illegal liquor, Frieda gets swept up in the lucrative, risky work-and swept off her feet by a handsome Ivy Leaguer who's in it just for fun. As danger mounts and her own feelings threaten to drown her, can Frieda find her way back to solid ground-and to a love that will sustain her?