Chatfah,theyoungestsisteroftheBupphachindafamily,hasjustreceivedthelargestshareofherfather'sinheritanceandisabouttobemarried.However,Chatfahfallsfromthehighestfloorofavacationhometoherthreeoldersisters'shockedeyes.Whenherbodydisappears,herthreesisters—Baibua,Chomphu,andPicha—becomesuspectsinherdisappearance.TheeldestsisterBaibuaiscomposed,wise,andhasalwayssacrificedforherfamily.Thesecond,Chomphu,isaconfidentmodelwhoseboyfriendChatfahstoleandwasengagedto.Thethird,Putpichaya,isajewellerydesignerandtheclosesttoChatfah.ThethreesearchforChatfahwhilefurthertragedybefallsthemfollowingtheiryoungestsister'sdisappearance.Whennooneelsecanbetrusted,thethreesistersmusttrytotrustoneanother.TheymovebacktotheirchildhoodmansiontofindoutwhowasbehindChatfah'sdisappearance,whichcouldverywellbeoneofthem.