The deep rumbling sounds can be heard around the island and the ZingZillas rush to the glade to see where it's coming from. Todd thinks it's his tummy rumbling but the ZingZillas quickly discover that the majestic droning sound is coming from a didgeridoo being played by Dhinawan. DJ Loose explains that the didgeridoo is a very old instrument and when Panzee tells the Moaning Stones all about it she finds out that even though they are also very old neither of them have every celebrated their birthdays. The ZingZillas have decided to do a didgeridoo Big Zing and although it sounds fantastic, Panzee feels really sad about the Moaning Stones never celebrating their birthdays. The others agree and so they decide to do something to celebrate Granite and Gravel's birthdays. They split up into teams and head off into the jungle to see if they can find a suitable present. Sadly neither the Tang and Zak team nor the Panzee and Drum team can find anything. They do manage to get some wrapping paper from Todd though. But what good is wrapping paper with no gift to wrap? Drum has an idea - they can create didgeridoos from the cardboard tubes in the wrapping paper. Todd is not feeling too good - he has eaten too much fruit trying to get his tummy to stop rumbling. The ZingZillas explain that the rumbling sound is coming from the didgeridoo in the glade, not Todd's tummy. Todd is very relieved and finds them lots of colourful paint to use to decorate the cardboard tubes. Granite and Gravel are thrilled with their didgeridoos and can't wait to play them in the Big Zing - which is lucky because the last coconut falls, so it's that time of day.