本季以新英格兰森林中一座废弃木屋为背景，一只怀孕的母鼠、一只小浣熊和一只目睹过恐怖事件的树蛙偶然发现了森林中的一间旧木屋，它们原本将木屋视为避难所，却发现这里隐藏着更深的噩梦……

In Son of a Donkey, we meet Theo just as he moves out of his home to claim his independence — until he’s faced with the harsh realities of adulthood. From driving fines and daddy issues to internet scams and a lot of therapy, Theo and his best friend Johnny get up to their usual antics as they come to terms with what’s most important: family.

特雷弗·宾利（罗温·艾金森 饰）上次在《人来蜂》中照看高科技宅邸，却因为恼人的虫横加捣乱，酿成巨大灾难，这次离开了帮人看家的高压世界来担任学校工友，享受安静一些的生活。此时出现一个高薪工作机会，要他在圣诞期间到奢华伦敦顶楼公寓顾家，这样的诱惑实在令人难以抗拒。没想到学期的最后一天，居然没人来接学校圣诞剧的耶稣宝宝，特雷弗多了一位出乎意料的小同伴。这下他得照看顶楼公寓，还得照顾小宝宝，特雷弗还能享受他期待的平静圣诞吗？又或者这个佳节会就此陷入大乱？