A part of the underground has broken through to the basement of the house. Through it, an Oruat (or two) and a giant cucumber escaped. The cucumber may or may not be dead, depending on your needs.
If there are two player characters, use one Oruat: Tanino. If there are three or four, use both Tanino and Koronaeg. If there are five or six player characters, the giant cucumber is still alive in the underground area.
The uncle and his cousin
One of the first things you’ll need to do as Guide is to name the player character’s uncle. If the character has a surname, use it for both the uncle and the uncle’s cousin.
The uncle and his cousin had not seen each other for many years, but they were once inseparable—about forty years past. They did everything together, including courting the same woman. The uncle “lost”, but their friendship withstood that. It was only their growing economic and philosophical differences that caused them to drift apart. The uncle, however, still looks back on those days as the best of his life: his greatest friend by his side, his business plan before him, scrimping, saving, and taking calculated gambles in the game of life to get ahead.
His business has become more stable since then. He no longer has to scrimp. The hard times are gone, but so is the challenge. His own children, long grown to adulthood, now handle the day-to-day duties of the business, which is fine by him.
His cousin’s wife, always frail, died in childbirth after ten years of marriage. The infant did not survive the birth either. His cousin became a hermit after that, and rarely left the house.
The ripper murders
As the players begin fixing up the house—a job requiring 32 man-days of work—a “jack the ripper” style killing spree begins. The players might or might not realize that their uncle’s (and father’s) cousin was the first victim.
Starting the night they are offered the job, and every day or two thereafter, there are gruesome murders in the waterfront district. People are speaking of vampires and werewolves (and possibly witches, depending on the kind of religion and magic in your world).
The Oruat are killing to eat. Every few days they venture out of the basement in search of food, kill some human or animal, and return. Tanino is the one “in charge”, but really they’re two friends lost in a world they’ve never seen before, and unable to return home. Since they’re evil, they don’t care who dies as long as they survive.