Keen on Bob's sardine sandwiches, Pilchard sneaks into his rucksack and hitches a ride to work at Chef Tattie's UFO-themed revolving restaurant where she sneaks out and walks through some paint leaving a trail of green footprints. Inspired by all the talk of "aliens", the Machines follow the trail. Pilchard arrives in the kitchen and goes to sleep on top of a remote control causing the restaurant to revolve at high speed. Bob saves the day by luring Pilchard off the remote control with a sardine sandwich. The team finish the restaurant and the Machines discover the truth about the "alien". Air Date: Sep 3, 2015