På ferie i syden dumper de tre vennene Knut, Per og Kristine borti en smuglerbande. De tar i bruk alle midler for å bli kvitt de tre. Smuglerne har også hjelpere på grensen, noe som gjør det hele meget farlig.
Author from Bodø, Northern Norway, who is well-known for his Hardy Boys-esque crime series of books for children (the K-series), all set in the local area. He also co-authored with his wife the first editions of the German to Norwegian (and vice versa) technical dictionaries, and wrote several books on locally important boats and local boat traditions.