"Joker" Todd Phillips wuu jeclaan karaa ama uusan jeclayn, laakiin waxay mudan tahay in la aqoonsado in filimkan u baahan yahay aragtida ka-qaybgalka iyo milicsiga. Arrinta ugu fiican ee xiriirkan ayaa ahaa dhammaadka filimka, oo siyaabo kaladuwan loogu fasiri karo. Maxaa runtii dhacay? Su'aashan waxaa si toos ah loogala hadlay dadka Hoinix Phoenix, oo buuxiyay kaalinta horyaalka ee sawirka. Sida laga soo xigtay jilaaga, isaga laftiisu ma fahmin waxa filimku dhammaado, laakiin waxay ahayd wax qabad-halis ah oo uu ugu yeedhay mid ka mid ah faa'iidooyinka Joker.
Sida laga soo xigtay mid ka mid ah aragtiyaha, ficillada ficillada ugu dambeeya ee filimka ma dhacaan run, laakiin waa midhaha fantacleyda guban ee Arthur Fole, oo ku faraxsan rugta caafimaadka dhimirka. Sida laga soo xigtay Phoenix, isaga laftiisu si fiican uma uusan fahmin inay ku jirtay khayaaliga "Joker", iyo waxa dhabta ah. Atter-ka ayaa qirtay inuu jeclaa filimka si sax ah oo uusan u bixin jawaabo loo sameeyo oo dhan dhammaan su'aalaha. Daawade kastaa waa inuu si madaxbanaan u tarjumaa dhacdooyinka muuqaalka, isku xirka mala-awaalkeeda tan iyo sidaas oo ah "Qoraa" ee sawirka.
Phoenix wuxuu kaloo sheegay inuu haysto fikirkiisa ku saabsan dhamaadka "Joker", laakiin jilaaku wuxuu doortay inuusan sheegin qiyaasadiisa. Tan iyo markii taageerayaasha cajiibka ah aysan ka helin jawaab cad oo ka soo baxa Houkina, waxay weli sugayaan faallooyinka agaasimaha TDD Phillips ama qoraaga lacagta Scott Square - si lama filaan ah mid ka mid ah ayaa la wadaagi doona waxa ku dhacay filimka dhab ahaantii.