When Mayumi's fiancé leaves her for another woman, Mayumi impulsively decides to move away and start over again by the seaside. Once there she meets Rin, a tough but kind single mother who runs the housing complex Seagull Villa. While the two women might not have a lot in common, they're drawn to each other, and the relationship growing between them is deeper than they expected. Sail away on this tale of romance by the sea!