From the description:
The Bell Must Toll Tonight is a 2 to 3 hour one-shot for the world's most popular roleplaying game. Balanced around 4 players of 4th level characters, the adventure features dark themes and a party of investigators racing against the clock. Premade characters with custom sets of abilities are provided to allow new and veteran players to get started quickly on game night.
Overview
The players take roles as members of Venator Obscuras, a guild dedicated to the investigation and containment of dangerous supernatural and magical phenomena. The guild tasks the characters with an investigation into strange energy surges in the town of Neverpeak. The investigation pits them against a demon and tosses them in a race against time. The characters must reach a set of anointed bells outside of Neverpeak and ring them before midnight to close the gates that open on Spirit's Eve or the demon will be allowed to wander the realm of the living all year, along with whatever else comes through later.
Contents
Inside the adventure pdf you will find all you need to run the one-shot including:
5 Premade Characters
9 Encounters
1 New Monster Stat Block