The first episode features enforcement officers Wayne and Dan, who are on the hunt for fly-tippers. Their job is to investigate tips across Cardiff to try to find crucial evidence that will lead them to who dumped the rubbish.

Enforcement officers Wayne and Dan tackle rubbish dumped from illegal cannabis factories, while environmental health officer Juliet performs a surprise inspection of a takeaway. Plus, cleaners Caz and Tee face houses so filthy they need shovels to clear the layers of grime and animal excrement.