King Mouse begins when a mouse comes upon a tiny crown in the grass. The mouse puts the crown on his head, and when a bear subsequently comes upon him and asks if he's king, the mouse responds "Yes." This diminutive monarch settles into his new role very comfortably... until a snake comes upon a crown and claims she is queen. The mouse is not amused, especially when one by one the other animals find crowns and claim they are kings too. But when the bear can't find a crown, King Mouse make a most surprising decision.