The Octopus Masters is the twentieth episode of Season 5 and the 289th episode overall. It takes place in The Seven Seas of the 18th Century. Oggy finds a magic medallion in a shipwreck graveyard, and gives it to Olivia. When she puts it on, an Octopus appears, to obey her every wish! The 3 cockroaches do their utmost to steal the magical pendant from her.