V norvezhskom gorode Bergene zhivyot sebe vpolne obychnaya norvezhskaya semya: mama, papa, shestiletniy Martin i ego starshaya sestra Matilda. No vsyo menyaetsya, i zhizn vdrug napolnyaetsya priklyucheniyami, kogda k nim priezzhaet pogostit dedushka Oskar, kotorogo deti ranshe nikogda ne videli. Oskara nedarom prozvali SHokoladnym dedushkoy, ved on strashnyy slastyona i zhit ne mozhet bez konfet i shokolada. A eschyo on — hotite verte, a hotite net — umeet hodit po potolku, vot takoy neobychnyy dedushka! Odnovremenno s Oskarom v Bergen pribyvayut i syostry Paulsen, tri dovolno vrednye damochki, kotorye, naoborot, terpet ne mogut sladkogo i mechtayut, chtoby vse torty i pirozhnye v gorode stali gorkimi ili solyonymi. Zachem im eto nuzhno i udastsya li im sorvat ezhegodnuyu gorodskuyu yarmarku sladostey, ili kto-to pomeshaet ih kovarnym planam? CHem zakonchilas eta zahvatyvayuschaya detektivnaya istoriya? CHitay knigu — i uznaesh.