As Christmas approaches, Jake decides he wants to do something special for her and he writes to Mrs Claus who helps him give her the perfect present. Mrs Claus helps out in her own stylish way, flying from Lapland across London in her helicopter to get Anna’s present to her on Christmas morning. As she departs, it magically begins to snow, delivering a white Christmas for all to enjoy.
Brandwatch said there had been more than 4,000 tweets about the campaign since its launch.
After its launch, it was trending in third place on Twitter, UK-wide.
Wilkes told PRWeek: "We will have in-store decor to continue the Mrs-Claus-themed concept, with letters and post boxes."
During the campaign, M&S will offer customers the opportunity to donate to a local charity of their choice at the tills.
The retailer has also agreed a partnership with Channel 4, which will see Mrs Claus give seasonal style, decoration and food tips with a host of C4 TV presenters, and help Mrs Claus rise beyond the ad slot.
Store assistants have been encouraged to carry out 15,000 acts of 'Mrs Claus kindness' in December, to extend the campaign themes.
What does the panel think?
Commenting on the campaign, PRWeek Christmas campaign panellist Andrew Bloch (above), founder of Frank, said: "Marks & Spencer has really ramped up its effort with this year's campaign in an attempt to win back its core customers by putting the spotlight on Mrs Claus as a stylish, festive, 55-year-old woman. M&S have pushed the advert hard on social media - it even has it its own emoji.
"The ad really seems to have won the hearts and minds of customers with many taking to social media over the weekend to declare M&S the winners of the Xmas ad battle, and you can't fault M&S for pulling out all the stops to ensure that everyone will #LoveMrsClaus this year."
Fellow panellist Chris McCafferty, founder of Kaper, added: "High-five Mrs Claus, you helped create a belter of a Christmas story. The female hero, in a James Bond-style helicopter ride and a cracking pair of trainers for Anna who is left misty eyed. Much to my surprise, so was I.
Misha Dhanak, co-founder of The Romans, said: "Am I allowed to love Buster AND Mrs Claus? M&S have created something both heart tugging and super sassy in this Bond-meets-Christmas offering. It’s hard not to love Mrs Claus or value the ties in the family and it’s got a touch of the Bisto about it, in that this could be a campaign that runs for years to come if the instantly positive public reaction to Mrs Claus is anything to go by. The focus on giving rather than receiving gifts is refreshing and the fully integrated plan that extends to ‘random acts of kindness’ throughout stores will keep Mrs Claus front of mind throughout the Christmas period. Those red trainers will surely sell out. The soundtrack to Find The Fairies was very memorable but the story behind Mrs Claus feels more enduring, and the empowering image of a woman charging around the world on a helicopter creates an excellent backdrop for the subtle and chic product placement that runs throughout the ad."