When Gekko and Owlette's overconfidence plays right into Night Ninja's plan, they must learn to work together, while Catboy must overcome his fear of water.
Ninjaka again steals the pirate tank and resurfaces under his nickname Pirate Ninja, besieging the city's canals. Yoyo must brave his fear of water, while Gluglu and Bibou's overconfidence plays in Ninjaka's favour.
The following characters appeared in the episode "Pirates Ahoy!":