A bratty kid saves an alien from being entrapped in a pot for skipping Monster school on the condition that he does his homework for him. However, this ends up humiliating him when all the answers are wrong. He then tells the little monster to destroy the school which gets him MAC's bad side. Later, MAC find him and chase him until he grows giant. All he wants to do is go home. Will he ever?
空から落ちてきた不思議な壺を拾った「怪獣くん」こと宮坂少年。中には怪獣タイショーが閉じ込められていた。同じ境遇の二人はすっかり仲良くなるが、宿題嫌いの宮坂少年が「学校がなくなればいい」とつぶやくと、タイショーは巨大化し……。
