While on vacation at McLeod Castle in Scotland, Gwen Mackenzie has nightly dreams of an ancient warrior bound by a curse. During the day, she sees Niall, nicknamed #ScottishBoyfriend. She clicks a few selfies with him in the background. Oh, and can that man rock a kilt! As she gets to know him, she realizes that Niall is the warrior from her dreams, cursed to live as a ghost for the past five hundred years, to see life around him but never see, taste, or feel any of it—except Gwen.