Tropica-shine! Motivation to the Max! Cure Summer!

Manatsu Natsumi, a first-year junior high school student, was born and raised on a small island and has been attending junior high school in the city of Aozora since spring. On the day she moves to Aozora City, Manatsu has a shocking encounter with Laura, a mermaid who is looking for a legendary warrior, Precure.