老人养了一只聪明的猫。这天老人要开个生日派对，健忘的老人随手把鸡蛋放在长椅子上压破了，面粉罐不知何时吃空了，仓库的钥匙又莫名其妙的掉进井里头。眼看着生日派对就要开始，老人和猫要怎么联手做出一个没有蛋又没有面粉的蛋糕呢？ 这一切都是因为厕所的门打不开那天开始，派特森被困在厕所内并且大发雷霆，要求芬达猫把一团乱的厨房收拾干净。 于是芬达斯决定给他心目中说了算数的人——国王写封信，希望国王告诉派特森:猫是不用打扫的。就在芬达斯和派特森等待国王回信的时候，出现了一只肚子超恶的大嗓门麋鹿；神气的马戏团老虎；还有一群来自月球的太空鸡？！连派特森好久不久的亲人也来拜访……

Pettson and Findus are fishing down by the lake when suddenly a snowstorm rises and it starts to get dark. Lost in the bad weather they are forced to seek shelter in an igloo they build out of blocks of frozen fishes. Inside they tell stories from the past year to keep their spirits up.