Annalise Oliver's family has owned and run lakeside cabins in Renn Lake, Wisconsin, for generations. This summer, she gets to help out while her younger sister focuses on being an actress and her best friend is babysitting rambunctious twin boys. It's the perfect opportunity for Annalise to work and spend more time by her beloved lake.

When she was three years old, Annalise discovered that she could sense what Renn Lake was thinking and feeling. Now, at twelve, she still turns to Renn for comfort. But when a small patch of algae quickly becomes a harmful bloom, Annalise can no longer hear Renn, and the lake is closed. She and her friends must find a way to save the lake.

Writing from the perspectives of both the lake and Annalise, acclaimed author Michele Weber Hurwitz tells a sensitive and heartfelt story about community, activism, and fighting for the things you love.