When Mammie and Stan are freed from jail the two once again set their sights on eliminating the Black Petes and Saint Nicholas.

Piet Piraat hopes to join the Brave Pirate Club. To do so, he must complete three assignments. The last to do of these assignments is to defeat a sea monster. The Scheve Schuit sets course for the port town of Comino, where they will try to free the townspeople from the threat of the so called sea monster...

After the Bellinga family vloggers are voted the best vloggers of the year, thieves, green with envy, hatch a plan to steal the gold winner's cup.