Overview: The players are hired to investigate a series of disappearances in a nearby city, but they soon discover that the city is actually a gateway to the afterlife, and the missing souls have been trapped there. The players must navigate the dangers of the underworld and find a way to free the souls and stop a powerful necromancer who is using the city for his own dark purposes.

Act 1: The Vanishing City

The players arrive in the city to investigate the disappearances and find that the city has strange and supernatural properties. The buildings and streets shift and change, and there is a constant feeling of unease. The players must navigate the maze-like city and discover the cause of the disappearances.

Act 2: The Underworld

The players discover that the city is actually a gateway to the underworld, and the missing souls have been trapped there. They must navigate the dangers of the underworld, including monsters, traps, and puzzles, to find the missing souls and figure out how to free them.

Act 3: The Necromancer’s Lair

The players discover that a powerful necromancer is using the city as a way to capture souls for his own dark purposes. The players must confront the necromancer and his minions in his lair, and stop him from using the city to gain even more power.

Act 4: The Great Escape

The players must lead the trapped souls out of the city and back to the land of the living. Along the way, they may face powerful foes who seek to stop them from freeing the souls. Once they make it back to the land of the living, they must confront the necromancer one final time to put an end to his dark plans.

Conclusion: The players are hailed as heroes for freeing the trapped souls and stopping the necromancer’s evil plan. The city may still exist, but the supernatural properties that made it dangerous are gone. The players may choose to explore the city and its secrets or continue their adventures elsewhere.