The Great Lakes and their boats as background for the story of the elusive romance between Irene and proud, determined Tim. A Chautauqua lecture has given both of them a philosophy for life and each pursue a course, -- Irene loving Tim and suffering only abuffs. Tim calculatingly climbing his dream of a captaincy. Irene turns to Rusty, but with his loss in a storm, turns again to Tim, marries him, and faces tragedy, at the return of Rusty. The death of Irene's little son, the wreck of Tim's boat, and with it his career finally bring them together again. Plentifully filled with friends, their stories, a full picture of life of lake boat families. Solid, but not surprising.