Kristi Swan and her neighbor, Shauna, are both having difficulty with their husbands. So when Shauna suggests to Kristi that they should get their lives back by killing each other’s husbands, Kristi facetiously sanctions the plan.

But when her husband, Devin, shows up dead, she realizes Shauna mistakenly took her flippant response seriously.

Now Shauna expects Kristi to hold up her end of the bargain. As Shauna becomes increasingly menacing, Kristi realizes she is caught between being framed for murder or becoming the next victim.