Will Milla and her friends be able to save the seal "Knopfauge" and the seal station from the greedy Hajo Ehlers? Ironically, Ehler's son Henry, whom Milla knows from school and doesn't like, turns out to be a great help.
2013
2007
2017
1987
2019
2010
2001
2012
2020
1985
2015
2014
1997
2000
1979
1977