In the final instalment Marion falls in with a crowd of animals determined to stop humans from celebrating bonfire night forever by blowing up the pub.
It’s up to Nelson to take heroic action to save Destiny from certain death.
Also this week, Destiny is chosen to become a photographer’s model but things may not go as expected – the photographer’s idea of glamour is quite different to Destiny’s.
As always the full episode will be available to watch at bbc.co.uk/bbcthree following transmission
Plus, here’s your change to be one of the first to watch Mongrels Uncovered – a documentary all about the on set secrets and behind the scenes challenges. Head to the BBC3 blog to be one of the lucky readers getting a chance to see it first before it’s shown on telly.
BBC Three: 22.30, Tuesday 10th August