Oggy and the Treasure is the nineteenth episode of Season 5 and the 288th episode overall. It takes place in The Seven Seas of the 18th Century and is a double part. Oggy is cabin boy on Jack the Pirate's ship. While searching for treasure, they meet (and sink) Bob's ship... and kidnap Olivia. A mad chase ensues over Treasure Island as roaches and cats race to find gold...
- Despite taking place in the 1700s, Bob's ship flew the current version of the United Kingdom's Union Jack instead of the Union Jack used during this era (prior to the inclusion of the St. Patrick's Cross used to represent Ireland's unification with Great Britain in 1801).