Mick, played by Danny Dyer, takes drastic action to stop Nancy from marrying her boyfriend Wayne.
The story begins once Mick, his wife Linda (Kellie Bright) and their youngest son Johnny (Sam Strike) have settled into the Queen Vic after taking over the pub.
Things seem to be going well for the Carter clan, but then Mick becomes unsettled when he receives an invitation to Nancy's wedding through the post.
As Mick and Linda have never liked Wayne, a concerned Mick can't bring himself to tell his wife about Nancy's wedding plans. However, the truth later comes out when Johnny learns of the ceremony and announces to his parents that he'll be going.
Later, the Carters all agree to go to the wedding to support Nancy (Maddy Hill) - but Mick soon realises that he can't let Nancy marry Wayne and physically removes her from the ceremony!
EastEnders airs these scenes on New Year's Day at 8pm on BBC One.
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Over on Emmerdale, new pictures show the moment that Declan Macey sets fire to Home Farm on Christmas Day.
Declan (Jason Merrells) resorts to the drastic measure as he wants to destroy everything - including himself - following his recent personal and financial problems.
With Charity Sharma (Emma Atkins) concerned for Declan's wellbeing, she heads to Home Farm just in time to see the businessman clutching a petrol can.
Declan is taken aback for a moment as Charity has caught him in the act of pouring petrol all around the house, but he soon ignores her words of protest by carrying on.
Soon Declan lights a match and drops it on the Christmas tree, leaving Charity shocked and fearful as they watch the flames take hold.
Declan's dark actions will lead to a fire raging through Home Farm - with his sister Megan once again bearing the brunt of his behaviour as she ends up trapped inside the burning building…
Emmerdale airs these scenes in an hour-long episode on Christmas Day at 6.15pm on ITV.
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Coming up on Hollyoaks, Grace Black finds herself in danger this Christmas as she is kidnapped and held hostage.
The drama begins after the Black family's enemy Ray McCormick arranges for his heavies to grab Grace (Tamara Wall) and drive her away.
Knowing that a huge amount of cash will be needed to get back in Ray's good books and save Grace, a concerned Trevor decides to steal from Mercedes, knowing that she's in the money after receiving Doctor Browning's inheritance.
When Trevor (Greg Wood) finds out that Mercedes (Jennifer Metcalfe) is going away to a spa with Cindy Cunningham, he knows that it's the perfect opportunity to carry out his plan - even if he has to kill Mercedes.
Freddie Roscoe soon learns of Trevor's intentions and desperately tries to warn Mercedes and Cindy, but Trevor manages to stay one step ahead. Faced with Trevor and ordered to transfer her money, will Mercedes cooperate?
Hollyoaks airs these scenes in a Boxing Day double bill at 5.35pm and 6pm on Channel 4.
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Meanwhile, Coronation Street airs Hayley Tamaddon's first scenes in the build-up to Christmas.
The former Emmerdale actress has landed the role of Andrea, who is one of Steve McDonald's new classmates.
Viewers have seen Steve (Simon Gregson) mention Andrea on a number of occasions since deciding to go back to school.
Steve has assured his girlfriend Michelle Connor (Kym Marsh) that she has nothing to worry about as Andrea isn't a looker, but when Andrea puts in an appearance at The Rovers, it's clear that he was lying.
Michelle is instantly jealous of Andrea's close connection to Steve, but does she have reason to be worried?
Coronation Street airs these scenes on Monday, December 23 at 8.30pm on ITV.
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EastEnders was the winner of our storyline poll last week as 31.30% of you chose Charlie Slater's Christmas return as the best plot.
Hollyoaks came second with 30.09% for John Paul being set up by Robbie and Finn, while Coronation Street was third with 27.47% for Rob and Tina being caught kissing.
Emmerdale claimed fourth with 8.83% for Priya's attempts to win David back, while Doctors had the remaining 2.31% for Heston's panto problems.
Don't forget to vote in the poll below and let us know which storyline looks best this week!
Digital Spy Soap Scoop video - press play below to find out why things are looking up for David in Coronation Street, who makes a murder confession in EastEnders, which Emmerdale bad boy Charity is about to pursue, and what happens in the aftermath of Sienna's comeuppance in Hollyoaks.