When 11-year-old Anna finds a mysterious kayak, her ordinary summer becomes a tangled, tentacled adventure. She discovers chemicals oozing into her beloved creek and vows to fight the polluters with the help of her friend, Xander. But the neighborhood bully, bloodsucking leeches and something sinister lurking beneath the bridge are trying to thwart her. And then her dog disappears. Caught in a whirlpool, Anna's finds herself transported to a strange kingdom where she learns about forgiveness, environmental activism and ravenous trolls. But can she find her Whippet Hound and stop the pollution...