After a lock-keeper entrusts his daughter to a canal Casanova, he is shocked to learn that she is pregnant. He then refuses to open his locks - causing barges to pile up in every direction until the guilty party confesses.
A funny thing happened to Lurkalot, serf to Sir Coward de Custard, on the way to Custard Castle. Lurkalot sells lusty love potions and rusty chastity belts in the market place, but on this day Sir Graggart de Bombast arrives to sack the castle, and to get the lovely Lobelia Custard in the sack! Lurkalot must help Custard cream the knight in pining armour...
The Huggett family go to a holiday camp, and get involved in crooked card players, a murderer on the run, and a pregnant young girl and her boyfriend missing from home.