Cora is a small mermaid with a big personality. She wants to be like the Singing Sirens, the most glamorous swim team in the sea. Unfortunately, an annoying roadblock—er, seablock—keeps getting in her way. When Cora fails her spelling test, her coach says she can't be on the team unless she gets an A on the next one! Can Cora conquer her spelling challenge, make the swim team, and stay true to herself at the same time?