Series 1, Episode 35 - Today The Dog, Tomorrow The World
Power-hungry tiny alien Empress Miasma takes control of Gnasher from the inside and uses him in her attempts to take over planet Earth. But when Miasma breaks out of Gnasher into Beanotown for real and Walter helps her grow in size, mayhem really takes hold!
- Thursday 31st May 2018
- 10 minutes
- Tuesday 22nd October 2019 at 3:35pm on CBBC