Mark Kendall just found out his one-night stand has been around for centuries.

Mark wants to lose his virginity, but his girlfriend wants to wait. Unfortunately for both of them, a 400-year-old vampire Countess needs to turn a virgin into a vampire before Halloween in order to preserve her own youthful appearance, and when she finds Mark, she turns his life upside-down.
In Once Bitten, consciousness is carried by monsters and creatures — a plane of “vampire teen comedy”. The story fights on E8/E6 of the E0–E14 reality ladder, compressing mortality, sexuality, youth.
Films fighting at the same level of reality, about the same things.
Other films that move a human interior onto the same kind of thing.
Evil Dead II (1987)consciousness in monsters · cabin demonic horror
Jeepers Creepers 2 (2003)consciousness in monsters · monster roadtrip
The Last Voyage of the Demeter (2023)consciousness in monsters · vampire ship horror
Lesbian Vampire Killers (2009)consciousness in monsters · lesbian vampire village
Godzilla vs. Destoroyah (1995)consciousness in monsters · kaiju apocalypse
From Dusk Till Dawn (1996)consciousness in monsters · vampire nightclubThe same preoccupations carried by a different kind of thing — grief told through the dead, an animal, a machine.
Avengers: Infinity War (2018)consciousness in aliens · mortality
Guardians of the Galaxy Vol. 3 (2023)consciousness in animals · mortality
Toy Story 2 (1999)consciousness in objects · mortality
Corpse Bride (2005)consciousness in the dead · mortality
Jumanji: The Next Level (2019)consciousness carried elsewhere · mortality
Puss in Boots: The Last Wish (2022)consciousness in animals · mortality