It's a fantasy story set around a little leprechaun man, a Wiplala, who can conjure, which he calls "tinkle." However tinkle succeeds only partially. He ends up with the Blom family living in Amsterdam South. The father, a learned writer, his daughter Della Nella, his son John and their cat fly. When Wiplala gets caught by the cat he is so afraid he twinkles him into stone. After some hesitation he becomes friends with the Blom family and an exciting adventure begins.