How do you decide where your heart lies when it’s being tugged at from so many sides?

When Robin and Zo-Zo discover that their beloved lake has become a toxic sludge — the result of an algae bloom — they know they have to do something to fix it. But trouble begins when the two friends develop a crush on the same boy during a community meeting to save the lake.

To help repair things between the girls, Robin’s grandmother, Griff, suggests a high-seas adventure with a whale-saving old friend of hers. Out on the open water Robin must decide what’s more important: a relationship with a boy or saving the animals she loves.