Abby the Ambulance breaks down.
Bobby is having problems with what he thinks is someone playing jokes by ringing the bell and running away. Meantime, Jumpi is terribly upset at the loss of his new pet, Fluffy. In the hope of catching the phantom bell ringer, Max decides to make a false post-box in which to camouflage himself. While Max is keeping a look-out for the bell-ringer, the rest of the crew plus Jumpi, Martin and Mia are all looking for the lost pet. Kimmy is terrified when the post-box starts talking to her, but when Timba sniffs out Max, Jump is excited to find his new spider inside the post-box too. And Bobby is relieved to find out that the bell-ringer doesn’t exist, just an electrical fault in the wiring.