Behind the fairy tale with the waterman Leknínek

If the great flood had not broken the sluice gate on Leknínka Pond, he would have lived there happily on. But the water began to dry up, and he had no choice but to look for a new place to live and move into the neighbouring stream. But there lives a water doll called Perlicka, who doesn't want him there. But when Perlička falls ill with a mysterious disease, it turns out that the only one who can help her is Leknínek. Will the water boy be able to save his new neighbour? And where will he find a new home?