Hard-edged fireman Dean Mulligan has never been a big fan of Christmas. Twinkly lights and sparkly tinsel can't brighten the memories of too many years spent in ramshackle foster homes. Although he's established himself as one of the top firefighters at San Gabriel Station 1, he doesn't think he's good enough for someone like gorgeous Lizzie.

Lizzie Breen is used to fighting—from her alpha male brothers, who try to smother her in the name of safety, to the life-threatening childhood illness she overcame. She knows what she and Mulligan feel for each other is a lot more than a fling, but she can't get him to see that. The only gift Lizzie wants to give him this season is her love, but he's not willing to accept it.

When Mulligan is trapped in the burning wreckage of a holiday store, a Christmas angel arrives to open his eyes. But is it too late? This Christmas, it'll take an angel, a determined woman in love, and the entire Bachelor Firemen crew to make him believe ... it is indeed a wonderful life.