Bauer Pettersson erinnert sich an den Tag, an dem Findus in einem Erbsenkarton in sein Leben trat. Wie froh er doch ist, dass er den kleinen Kater behalten hat.
On a rainy summer day Findus asks Pettson to tell him a story. He wants to hear the one about the time he disappeared - even though he’s heard it many times before. After a little persuasion Pettson agrees, and begins to recount the story of how Findus came to live with Pettson, and how he almost lost him again. The story begins when Pettson lived all alone on his farm.
