Der Tag, an dem ich cool wurde (Series) favorite_border

[DeepL Translation - needs review] There's no such thing as giving up! An encouraging novel to laugh off

Martin and Karli wish they were as cool as Lukas and his "FabFive". But they make life difficult for them with pranks and other nastiness. Martin and Karli's revenge plan goes badly wrong and the boys have to go camping with Martin's dad and grandpa as punishment. Instead of doing Grandpa's scouting tasks, they try to work through their own "How to be cool" list. And it works better tha...