MollyMonsteristhedeeply-lovedonly-monsterofPopoandEtnaMonster.ShespendsherdaysinfamiliarsurroundingsplayingwithherbestfriendEdison,aclockworktoywithalifeofhisown.ButwhenMamagivesbirthtoanegg(whichPapamusthatch)Mollysetsoutonajourneytofindhernewplaceinthefamily.ThejourneytakesherfarawayfromhomeandovertheWildHillstoEggIsland,wheresheisreunitedwithherMamaandherPapa,andhernewmini-monstersibling."MollyMonster"dealswiththethemeofbecomingasisterofabrotherandtheexcitementthatcomeswithitfromthepointofviewofasmallchild.Enchantingandentertaining-auniversalpreschooladventure。