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The residents of the Subcon Kingdom are celebrating the winter holidays! To celebrate, Birdo decided to host a party, and sent invitations in the mail to her old friends: Mario, Luigi, Princess Toadstool, and Toad!
But, to her surprise, on the day of the party, none of her friends had shown up! Soon after, she got a phone call from someone...
It was Wart!
"Wahahaa! You are formally invited to attend my holiday party at the Nightmare Palace! Come and meet the now kidnapped Super Mario Bros.!"