There was once a king in the world, and the king had three sons: two were handsome, and the third... In general, the third had a highly developed sense of responsibility. That is why the father-king sent his third son on all sorts of dangerous missions to all sorts of suspicious places. And so it turned out that, while carrying out yet another of his father’s instructions, the young man literally finds himself sitting in a swamp, and in a frog’s skin.