Leanne and Rhona are two ordinary flatmates whose lives are thrown into disarray after witnessing a gangland shooting.
Could things get any worse for Leanne and Rhona? Their gung-ho attempt to frame nemesis Willy Whelan backfires. Now, Rhona finds herself trapped in Willy's secret weapons room as his henchman One-Pack closes in, and Leanne is cornered by trigger-happy teen DJ Sound as F***. Meanwhile the gang have uncovered Patrick's secret, he's been helping the girls - and now he'll have to pay. With surprises coming thick and fast, how will the girls escape their most deadly scrape yet?
Leanne is flourishing in her new 'wit pro' identity as estate agent of the month, Julie. But things aren't as rosy for Rhona, toiling away as a cowboy-hatted waitress in a theme restaurant. A chance meeting leads to an emotional reunion and, after a near-fatal encounter with a gang hit man, they remember someone who might just be able to help them. Meanwhile Patrick sinks deeper into a life of crime, but a mysterious correspondent gives him a glimmer of hope. And DJ Sound as F*** is not cut out for life with his unusual companions.
Leanne and Rhona turn super sleuth, tracking the rival Bristol gang down to a kebab shop. Disguised as good cop/bad cop, the girls put on a performance they hope will trick the rival gangsters into doing their dirty work - bumping off Willy Whelan. But these hardened crooks aren't what they seem. Meanwhile, DJ Sound as F***'s marriage to Brigid is looming. And Patrick's unlikely online friendship takes a romantic turn.
Leanne and Rhona need to lure Willy Whelan to their fake Tudor Banquet, so that Baz can try to kill him "with hammers". An undercover escapade in a beauty salon convinces his wife to snap up the tickets. But there's a hitch. Unbeknownst to them, some leaked information means their plan is riskier than they first thought. And after eavesdropping on a secret plot by Baz and his friends, Leanne starts to get cold feet. In this gripping penultimate episode, Leanne and Rhona risk it all in their outlandish Tudor-themed stunt. Meanwhile DJ Sound as F*** faces up to his crimes.
Ambushed by the gang, Rhona and Leanne are trapped as the building burns down around them. It looks as though Willy Whelan has triumphed in this final stand-off. But will Patrick betray his ex-love, Leanne, so easily? Meanwhile, with gang insiders dispatched to kill him, DJ Sound as F*** is set to meet a grim fate in the juvenile detention centre. In the dramatic finale of Witless we discover whether Patrick really has crossed over to the dark side, if it's the end of the road for DJ Sound as F***, and whether Leanne and Rhona can make it out alive.