Afterescapingtheclutchesofanabusiverelationship,Katiereluctantlyreturnstothefosterhomeshegrewupin.Littledoessheknow,herfostermotherMargeisharboringasinistersecretdatingbackadecade.Now,KatiefindsherselfcaughtupinahorrifyingfamilydramawhileconfrontinganangryspiritnamedAbigail.