Megan Walsh is a successful businesswoman who does not seem to have enough time for her husband and two children. While taking her children trick-or-treating during Halloween, she encounters a confusing situation in which many families are decorating for Christmas (which is nearly two months away). Their explanation is that they are trying to provide one last Christmas for Dax Locke, a toddler in their neighborhood who is dying of a rare form of leukemia. Curious, Megan reads Dax's mother Julie's blog and learns about the Lockes' journey. Inspired, Megan examines her own life and priorities.