沫沫知道凱文的脾氣火爆，大大影響他和媽媽、同學的關係，於是決定到人類世界去幫助他。怎料，凱文卻以為沫沫是巫婆，施展各種「巫術」來欺負他……
關鍵字詞： Nature | changing seasons | senses | animals | Laurie Lazzaro Knowlton | poetic language | fall | animal communication | counting | ordinal numbers | Steph Marshall | illustrations | bright | bold | fall feast