Scientist Harley has a small problem: He’s turned himself tiny! To regain his stature, he must reconstruct his exploded shrinker invention from parts flung throughout his house and yard. While searching 18 oversized side-scrolling stages, he scales laboratory beakers with suction cups, floats using a soap bubble and parachutes, blasts building blocks with a toy tank, and more. Exploration is a giant part of Harley’s journey, and so are the hazards.