Some secrets aren't meant to stay buried.When Calvin and his beagle, Pudge, discover a hidden crate in the basement, they unleash an adventure bigger than anything they've ever imagined. Inside waits Aegis-a mysterious, half-broken robot with a glowing heart that was never meant to fall into the wrong hands.As the pieces of Aegis's heart are scattered across town, Calvin and Pudge must follow the riddles left behind by Calvin's late uncle while staying one step ahead of Hartwell, a shadowy figure who will stop at nothing to claim the power for himself.But when the town turns against them, whispers become mobs, and fear threatens to break their bond, Calvin will learn that courage isn't the absence of fear-it's choosing to stand by your friends anyway.Together with Pudge and Aegis, he'll face danger, friendship, and the greatest secret of all: the power of choice.