It’s the big day for Kath and Diane as they attempt to finally exact their revenge on Martin. But whilst Diane has never felt more alive, is Kath having second thoughts?

Kath wakes up in Sandy's hotel room and tries to convince him to give Martin a job. Martin and Diane both rush to Kath's aid but things don't go to plan and they know they're all in deep trouble.

Diane puts her trust in Kath and sends her on a covert mission while she reluctantly goes to dinner at Sandy Cooper’s house with Martin. But will Kath be discovered?

Diane is stressing about Alison's 18th, Martin lets Mic down gently, and Kath is left questioning her life choices when Ash turns up.

Kath is planning her anniversary celebrations, while Diane is worried she’s not got enough cheese for the soiree she’s organising for the ‘French exchange people’. Meanwhile, Martin is under financial pressure and needs to make some big decisions - decisions that will end up impacting him and everyone close to him.

Diane is worried that she didn’t impress the school governors, Kath is revealing more than she should, and Martin is desperately trying to get his hands on a chunk of cash.

Despite Kath, Diane and Martin needing to keep their heads down, Kath has a run-in with the police and end up bumping into an old friend.

Moneylenders move in on Martin’s family, leaving him with no choice but to fight back. Meanwhile, Diane and Kath pursue Martin in the hope that they can work out what he’s up to.