Set in a German-speaking country in the 1970s, the series is about a 12-year-old girl called Mytyl and her 13-year-old brother Tyltyl seeking happiness, represented by The Blue Bird of Happiness, aided by the good fairy Bérylune.
A German-language television series from the 1970s follows a pair of siblings, Mytyl and Tyltyl, as they embark on a quest for happiness with the help of a blue bird named The Blue Bird of Happiness and their benevolent fairy companion, Bérylune.