Alex's fiance Peter is a little nervous when his parents decide to stay for a pre-Christmas visit, but their eccentric, charming ways soon begin to awaken Alex's hidden inner child.With fairy tale snowfalls, Mrs.Claus' magical ways in the kitchen and the somewhat surprising discovery of a sick reindeer in the garage, Alex's six-year-old son Max begins to suspect the exciting truth.Caught up in the enchantment surrounding her perspective-in-laws, Alex doesn't realize her cynical father and jealous colleague are plotting against the Claus in a bid to win Alex back to their skeptical world.With the wedding on the brink of being cancelled, it's a battle of heart versus mind, with Christmas itself at stake.