Animal series about Eva and Karl, who help lost, abandoned and sick animals at their parents' rescue centre. When Eva spots a family of ducks swimming on the lake, she falls in love with a tiny, timid duckling she names Dilly. The baby of the group struggles to keep up with her stronger siblings, and one day gets hopelessly lost. There are many dangers facing a duckling all alone, and Eva must find a way to keep Dilly safe and sound.