Sitting Ducks - Season 2 Episode 13 Feather Island
Overview: After Drill Sergeant Duck bans Bill and Aldo from spending time together, they decide to go on a treasure hunt. However Ed, Oly, Waddle and Raoul follow them while trying to turn them all against each other. It turns out that the treasure wasn't what they expected but just a means for Bill and Aldo to spend time together.