Jonny's new car gets him into trouble with women. After confronting Janet, Donna plans her revenge on Gaz for his infidelity. Louise resorts to underhand tactics as she seeks forgiveness from Jonny for getting him shot by the police.

Gaz wakes up to find the flat empty. He thinks he's been burgled but its Donna who has moved her stuff out and left him. Jonny is preparing for fatherhood with a new car, 'Herbie' and driving lessons from Gaz. He soon discovers that Herbie is great for attracting women.

Louise tries to persuade Jonny to forgive her for getting him shot by the police. Jonny's pardon will help Louise reduce her sentence in court.

Louise tries to bribe him with biscuits, but he doesn't respond. So she kidnaps Herbie. If Jonny won't forgive her, Louise will have Herbie crushed to death. Donna confronts Janet about Gaz. Because Janet is pregnant, Donna can't beat her up.

Donna decides to take revenge on Janet for sleeping with Gaz by sleeping with Jonny. Trouble is, Jonny isn't interested. She announces that she's going to leave the country. Gaz and Janet take desperate measures to try to stop her going.