De Scheepsjongens van Bontekoe plot
Hajo wants to go to sea as a cabin boy on skipper Bontekoe's ship. His mother, who lost her husband at sea, does everything she can to keep him ashore, but the call of the sea is too strong and Hajo's presence on land brings nothing but misery. Padde, Hajo's clumsy boyfriend, can't say goodbye to him. He jumps on board just before departure and it is decided that he will travel to Harlingen, where they have to load gunpowder. Padde will sail back to Hoorn with a tjalk. Padde, however, falls asleep and only wakes up when they are already at sea. On board, Hajo and Padde befriend Rolf, a boy who can already read and write. On their journey to East, they experience many exciting adventures together with skipper Bontekoe.