Misi Mókus was born in the spacious, comfortable den of a huge tree in the forest with his four little brothers and sisters. He was the liveliest and the biggest of the four. He could be distinguished from his siblings not only by his features, but also by a peculiar characteristic: his tail was black. Although there are species of squirrel that have black fur, Misi's family belonged to the red squirrel family. Father Squirrel was angry enough to say - Red squirrels have red tails. If it's black, it's caused by some bad spell.The parents asked Uncle Squirrel Squirrel for advice on what to do about Misi's boys' black tails. The wise old Squirrel Squirrel predicted good luck for his boys.