Decker Sullivan has been at war with Fiona Bell since she issued a curse against him and his identical brothers right before high school graduation, declaring if any of them ever fell in love, their brotherhood would splinter and fall apart. You wouldn't think a curse is real, but Bad Things kept happening whenever one of the triplets would date, so they swore off dating forever.
But now Jack, the middle of the triplets, is in love and expecting a baby. And Bad Things are happening again. So Decker needs to break this curse, and he needs to do it NOW.
His solution? Make amends with Fiona any way necessary.
Unfortunately for both of them, in his first attempt to do something nice for Fiona, he accidentally convinces the town that they're dating.
Fiona needs the goodwill of Decker's character endorsement to secure a business opportunity, and now, because of what he's done, she needs him to play the role for just a bit.
Neither of them needs the feelings that are developing the more they get to know each other though. And the more they see the good in each other. And the more that they see how much their lives have in common, the more likely it is that these enemies not only break a curse, but become lifetime lovers.