In a small harbor on the North Sea coast, the skipper's pub "Zum eisernen Matrosen" and the customs office are located opposite each other. Since smuggling has been practiced on the Waterkant since time immemorial, the "smuggler king" Adrian and his two sons Paul and Emil try to outsmart the conscientious and omnipresent customs officer - according to the motto: "Go to sleep with grog, wake up with grog, that's the whole course of the day!"