After Miranda quickly agrees to become Gary's safety wife, she decides to create a spontaneous romantic moment with him so he will see her in a new light.
After gaining a job at a department store and losing it while trying to cancel her gym membership, she waitresses at Gary's restaurant.
When a new customer makes Miranda realise she isn't cool, but she is young, free and single, she spontaneously informs everyone that she will go off to Thailand for a few days.
She enjoys the perks of staying in the hotel and makes friends in porter Jason (Luke Pasqualino) and Colin (Dave Lamb), a conference organiser.
The real seminar speaker then arrives and turns out to be the customer that started this mess in the first place, causing Miranda to jump out of a window to escape.
After attending a wedding, Penny decides to hold a Pride and Prejudice-themed party to set Miranda up with Edmund Dettori.
She fails to excuse herself, but the party's cancelled when Tilly sets her up with an army doctor friend, "Dreamboat" Charlie (Adrian Scarborough).
At the party, Miranda sees Edmund (Alex Hassell) and then announces she is straight, but after an introduction she can't stand his high-pitched voice.
When a man leaves his wallet in the shop, Miranda and Stevie compete against each other to see who he would prefer to take out to dinner, going as far as to get dogs.
To prove she can handle a tricky social situation, Miranda accepts an invitation to the Henley Regatta with Tilly and Fanny, who ask her not to embarrass herself and them.
When purchasing a new bed, she gets mistaken for the new employee and ends up talking to the rest of the workers who convince her to renounce men.
Finally, Miranda loses her temper with the duo at the wine tasting event and punches 'James' the vicar in front of them both, causing them to leave.
Meanwhile, Tilly, who is busy planning her wedding to Rupert (Adam James), decides again to set Miranda up with her friend, Charlie (Adrian Scarborough).
Miranda and Stevie endeavour to befriend the hip new young waitress, Tamara (Stacy Liu).
Miranda's presents that she ordered online have not arrived and she needs to escape Christmas with her mother and father (Tom Conti).
Miranda and Stevie decide to spend Christmas day in her flat with Clive, Gary and Tilly.
Penny tries to help Miranda get her life under control and she makes her daughter join a weight loss class, after she is featured in a news report about obesity.
Miranda tries to prove to Stevie that she can be a mature adult, so she babysits for Chris and Allison at the soft play centre, only for her back muscles to strain, causing her to go to an osteopath.
On her second day, she decides it's time to meet Mike's father, so she agrees to cook for him and hosts a couples dinner party.
When she finds her first grey hair, Miranda worries that she has done nothing with her life and decides to live free from regrets.
Miranda accepts Gary's proposal and later that evening after many failed attempts they finally sleep together but she then becomes worried that he has never told her that he loves her.
Stevie and Miranda fall out, while Gary is worried when Tilly and Penny begin planning the wedding.
To mark the 10th anniversary of the start of the show, the cast were recorded at the London Palladium in 2019 celebrating and commemorating the series.