UnFidelity is a twisted tale of polyamory and demonic possession set against the backdrop of modern day New York City.

When Zélus, an otherworldly demon driven to feed on adulterers, possesses Ana, a member of a polycule, they experience a sexual awakening that rewires their motives. Initially, the demon’s lust for blood evolves into a thirst for pleasure until they discover envy-fueled rage can exist even in this progressive lifestyle.