In every episode, singing and dancing Trefliks take children on a new adventure into the world of imagination. This seemingly ordinary family live in a small house. One day a mysterious guest - Little Uncle - pays them a visit. He has magical powers and is invisible to adults. Since then, he accompanies children - 4-year old Treflik and 6-year old Treflinka in their daily activities. He also secretly supports Mum and Dad. He takes the characters to mysterious faraway lands and helps them to understand the world around them. The Treflik Family is often visited by their relatives and friends, a group of very intriguing figures. This includes Grandma, Granddad, Auntie, Mr Jareczek, their neighbour Mr Robobot and finally the King and the Queen. The series is full of positive energy and teaches children values such as friendship, respect, honesty and tolerance.