The story follows Joker the Harlequin from childhood questioning of being born in the wrong body, through conversion-therapy-style suppression with Smylex, to affirmation via a T4T romance with Mr. J (a reimagined trans man Jason Todd) and immersion in a vat of estrogen. This premise subordinates the Batman universe parody to progressive identity exploration, turning the film into a vehicle for ideological messaging rather than entertainment. Creator Vera Drew explicitly frames the project as autobiographical mythologizing of her own trans coming-out, abusive relationship, and grievances against comedy industry norms and family transphobia.

Established DC characters receive deliberate transgender or nonbinary reinterpretations, including nonbinary Poison Ivy with they/them pronouns and Mx. Mxyzptlk, while Batman is recast as a fascistic, closeted gay abuser heading a dystopian regime that enforces patriarchal and anti-queer control. These forced alterations and the portrayal of traditional authority as inherently oppressive prioritize political allegory over coherent storytelling, resulting in a work where progressive ideology overrides artistic priorities.