Overview

The Castrovin Sea is vast, storm-scoured, and treacherous. Most sailors hug the coastline, avoiding the deeper waters and the jagged volcanic maze known as the Razored Labyrinth.

Inland, the ancient Bridge of Kridorfrost stands as the only crossing of the Noyrus River for a hundred miles. The bridge-town of Kridorfrost lives by tolls, timber, and river trade.

Then a sinkhole opens beneath the bridge’s lower supports. Workers vanish. Flooded tunnels appear where none should be. Strange black fragments are found in the rubble.

The bridge groans in the rain. Below, muddy water pours into a wound in the earth. Lanterns bob along the edge of the sinkhole as townsfolk whisper prayers, curses, and names of the missing.

Act 1 Beginning

The heroes begin in or near Kridorfrost during the first wave of the crisis. The immediate problems are practical and urgent:

  • Rescue missing bridge workers.
  • Stabilize damaged supports.
  • Investigate the sudden sinkhole.
  • Explore newly exposed flooded tunnels.
  • Identify who has been using hidden spaces beneath the bridge.
Starting Tone: grounded investigation, rescue work, dangerous ruins, local politics, and the first hints that the collapse may not be natural.
Starting Location Visible Problem Player-Facing Mystery
Kridorfrost Bridge Sinkhole under the lower supports Why did the bridge fail now?
Flooded Tunnels Missing workers and unstable passages Who used these tunnels before the collapse?
Bridge-Town Fear, rumors, trade disruption Who benefits if Kridorfrost falls?

Campaign Structure — Player View

Act Player-Safe Title Visible Focus Status
Act 1 The Sinkhole Beneath Kridorfrost Bridge crisis, rescue, tunnels, early investigation Visible
Act 2 Beyond Kridorfrost To be discovered in play Locked
Act 3 Across the Castrovin Sea To be discovered in play Locked
Act 4 Beneath the Razored Labyrinth To be discovered in play Locked

Opening Objectives

  • Reach the collapse site.
  • Calm frightened townsfolk.
  • Help with rescue operations.
  • Enter the exposed lower works.
  • Find signs of what caused the collapse.

Early Clues

Clue What Players Can Learn
Black glassy fragments The stone does not match local bridge material.
Cut support beams Some damage may have been deliberate.
Old tunnel masonry The bridge may have been built over older structures.
Missing tools and rope marks Someone used these spaces recently.
The air below the bridge is cold and wet. Mud sucks at your boots. Somewhere deeper in the dark, something metallic swings slowly, tapping stone again and again.

Suggested Character Hooks

Character Concept Player-Facing Hook
Auren Voss Knows smugglers, dock codes, and the kind of people who hide things under bridges.
Nemeia Thrice-Drowned Has recently dreamed of cold water beneath stone.
Brakkus Embervein Can inspect damaged supports, old mechanisms, and unsafe tunnels.
Thoros Reefbinder Can track movement through mud, rubble, and riverbank terrain.
Sister Caldris Vale Believes river, storm, and stone are warning that something is wrong.
Kharzug Ironbound Recognizes military-style tunnel discipline without knowing who is responsible.
Vaelith Sunsong Has collected old songs mentioning Kridorfrost, the bridge, and drowned foundations.
Player-Safe Advice: Each character should begin with a question, not an answer. Nobody should already know the central conspiracy.