Meredith Rossman is the uptight heiress of Rossman's Department store. She has made the business her entire life, not leaving any time for Christmas or romance, much to the chagrin of her parents. But when she is roped into donning the store's antique Mrs. Claus outfit to play Mrs. Claus at Rossman's famous Santaville, her life takes some unexpected turns. Through the help of the suit and the charming store Santa, Nick, Meredith rekindles her love of Christmas, the store, their employees and possibly even begins a new love with Nick. One thing is certain: from the moment Meredith put on the magical Mrs. Claus dress, her life would never be the same!