Tjorven and Mysak (1966)

Tjorven and the other children at Seacrow island have received a play day in a gift. Uncle Melker will find himself ending up in the lake several times. The kids also have found an old ship that will be named Albertina. They divide themselves into two pirate gangs and fights about the wishing stone Mysak.

Unfortunately the movie Tjorven and Mysak is not yet available on HBO Max.