S2, E47: Bing Bong - there's somebody at the door. It's delivery Chipmunk with a parcel for Duggee, but why is it wrapped up like a present? Maybe it's Duggee's birthday! The squirrels decide they should have a party, but they will have to keep it a secret as it's a very BIG surprise. Now what do you need for a party? Balloons, Decorations, Invitations! Will the squirrels be able to plan the party of the year whilst keeping it a secret.