The U.S. Navy conscripted Andrew Green before he ever got to join his family as they set out to become Raft People in order to survive the Big Flood. After the Big Flood, his old city of Houston lies under the new Sea of Mexico, but at least Andrew knows that his siblings, Liz and Mark, have been safely settled in Colorado. But Ensign Andrew Green is still far from Texas or Colorado as he patrols the Sea of Mexico over what used to be most of Florida. During this time, he works long hours to do his duty and retreats inside his head to relieve his loneliness and imagine a world that should have been.
Then his group gets called to deliver supplies to the floating city of New Miami. Andrew meets a lovely young floater woman named Clara, but she's got secrets that can threaten Andrew's career and even his life. Andrew, recruited and promoted too young, feels like a kid in a sailor suit as the crew tries to beat the storm and rescue anybody they can. Still, he can't help thinking of Clara. But is this a good time to fall in love with a woman who may have almost ruined his career and even risked his life?