Quest Line · Original Adventure · D&D 5e
Level 4 · One-shot
The village reeve of Saltwick has disappeared into the treacherous salt marshes while investigating smugglers. The party must navigate the fog-shrouded wetlands, explore a derelict lighthouse claimed by restless spirits, and confront the smugglers in their hidden cove—only to discover they've awakened an ancient tide-elemental that threatens to drown the entire region.
Players should create characters with motivations to help a coastal community in distress. The adventure features environmental hazards (drowning, quicksand), ghostly manifestations, and moral ambiguity around desperate smugglers. Combat is moderate but can be avoided through clever negotiation. The setting is a gray-morality coastal region where poverty drives people to desperate choices.
Content warnings: Drowning imagery, ghosts of drowned sailors, body horror (waterlogged undead).
Choose one or combine elements:
The Plea: Mera Saltwick, daughter of the missing reeve, approaches the party at a coastal inn. She offers her father's savings (120 gp) and a family heirloom (a coral medallion worth 200 gp) to anyone who can find him. He left three days ago following rumors of smugglers using the old Beacon Point lighthouse.
The Commission: The regional magistrate hires the party to investigate both the reeve's disappearance and the smuggling operation. Payment is 200 gp, with a bonus of 100 gp for evidence that can be used in court. The magistrate cares more about stopping the smuggling than finding one missing official.
Personal Connection: One party member receives a water-stained letter from Reeve Aldric himself, sent before he vanished. It mentions "the tide remembers" and includes a crude map to the lighthouse, suggesting he found something that endangers everyone.
The party departs Saltwick village at dawn, following the reeve's last known path into the sprawling salt marshes. The wetlands stretch for miles, a maze of tidal channels, reed beds, and sucking mud flats. Thick fog rolls in from the sea, reducing visibility to thirty feet.
The journey requires either a DC 13 Survival check to navigate efficiently or takes twice as long (four hours instead of two) if the party gets lost in the maze of channels. A failure by 5 or more means the party encounters one of the marsh's dangers:
Quicksand Pool: A seemingly solid path conceals deep mud. The lead character must make a DC 14 Dexterity saving throw or sink up to their waist, becoming restrained. Escaping requires a DC 14 Strength (Athletics) check, and allies can assist with rope or improvisation.
Bog Remnants: Three waterlogged corpses (use zombie statistics, AC 8, 22 HP each, no Undead Fortitude) rise from a tidal pool. These are sailors drowned decades ago, animated by the tide-elemental's growing power. They fight mindlessly but collapse into marsh water if reduced to 0 HP.
As the party nears Beacon Point, they spot the lighthouse—a crumbling stone tower on a rocky outcrop, surrounded by rusted chains and warning bells that clang mournfully in the wind. The tide is coming in, and the causeway to the lighthouse will be underwater in two hours.
The lighthouse stands three stories tall, its lantern room dark and broken. Rusted iron chains hang from the exterior walls, remnants of some forgotten warding ritual. The heavy wooden door hangs ajar, revealing darkness within.
Ground Floor: The entry chamber reeks of brine and rot. Broken furniture and old smugglers' crates suggest recent habitation. A DC 12 Investigation check reveals boot prints in the salt crust—two sets, one matching the description of the reeve's distinctive hobnailed boots, the other barefoot and strangely webbed.
Second Floor: A spiral staircase leads to a converted living space. Here the party finds evidence of the smuggling operation: false-bottomed crates marked with a wave symbol, manifests listing contraband tea and spirits, and a ledger showing payments to "the Tide Keeper." A DC 13 Perception check reveals a hidden compartment containing a sea-weathered journal.
The journal belongs to Captain Thress, leader of the smugglers. Recent entries grow increasingly paranoid: "The chains are failing. It stirs below. We should never have broken the seals for extra storage." The final entry: "Aldric found us. Maris took him to the cove. The water rises with anger."
Lantern Room: The top of the lighthouse offers a commanding view. Through the fog, the party can spot flickering lights to the northwest—the smugglers' cove, perhaps a mile distant across treacherous tidal flats.
As they prepare to descend, ghostly manifestations begin. Spectral sailors (use specter statistics but reskinned as non-hostile unless attacked) appear, trying to communicate. They point desperately toward the chains outside and pantomime a binding gesture. A character who succeeds on a DC 12 Intelligence (Religion or Arcana) check understands: the lighthouse was built as a prison, and the chains were part of a ritual binding.
The party must choose: go directly to the smugglers' cove, or investigate what the chains were meant to hold? A DC 14 Investigation or Arcana check of the chains reveals they're part of an ancient ward, recently broken. Seawater pools unnaturally in the chain depressions, pulsing with faint blue light.
The cove sits in a natural grotto accessible only at low tide. Four smugglers (use bandit statistics, AC 12, 11 HP each) work frantically to load a small ship. Reeve Aldric is here, bound but alive, guarded by Maris Deepwater (use veteran statistics, AC 17, 58 HP), a sea-elf with webbed fingers and pale blue skin.
The tide-elemental rises from the cove's center—a massive, vaguely humanoid form of churning seawater and foam. Use water elemental statistics enhanced to CR 7: AC 14, 126 HP, with a Whelm attack (DC 15 Strength save, 21 bludgeoning damage plus restrained and drowning). It was imprisoned by ancient coastal druids but awakened when the smugglers broke into sealed caverns beneath the lighthouse for storage space.
Possible Resolutions:
Combat Resolution: The party can fight the smugglers and elemental. Maris initially commands her crew to defend the ship, but when the elemental attacks indiscriminately, she realizes her mistake. At half HP, she offers to help defeat the elemental if the party will let her crew flee. The smugglers know a ritual phrase (in Primordial) that temporarily weakens it, granting advantage on saves against its attacks. The elemental can be destroyed through combat but will reform in 99 years unless properly bound.
Diplomatic Resolution: A character who speaks Primordial or Aquan can attempt to communicate with the elemental (DC 16 Persuasion check). It's not evil—merely enraged by imprisonment and sudden freedom. It demands tribute: the smugglers who broke its chains must serve as its tenders for seven years, maintaining the prison-lighthouse. Maris accepts this fate if it saves her crew, and Aldric can be convinced (DC 13 Persuasion) to modify the sentence to community service rather than execution.
Ritual Rebinding: If the party recovered information from the journal or communicated with the lighthouse ghosts, they can attempt the binding ritual. This requires three characters to maintain concentration (as the spell) at three points around the cove while a fourth speaks the binding words (written on deteriorated plaques beneath the lighthouse). The elemental makes three attacks during this process, and all four characters must succeed on DC 14 Constitution saves to maintain their parts of the ritual.
The Aftermath: Regardless of resolution method, Reeve Aldric survives and provides testimony. If the party destroyed the elemental without binding it, strange tides will plague the coast. If they bound it properly or negotiated, the seas calm. Maris and her crew face justice appropriate to how the party handled the situation—death, imprisonment, or redemptive service.
Reeve Aldric Brine: Weathered official in his fifties, devoted to protecting Saltwick. Motivated by duty and genuine care for his community. Knows the smugglers are desperate fisherfolk, not hardened criminals.
Mera Saltwick: The reeve's determined daughter, early twenties, works as a net-mender. Motivated by love for her father and fear of losing the only family she has left.
Maris Deepwater: Sea-elf smuggler captain with filed teeth and salt-scarred skin. Motivated by survival—she turned to smuggling when fishing quotas strangled legitimate trade. Not cruel, but pragmatic to a fault.
Captain Thress: Grizzled human smuggler (missing if the party investigates thoroughly—drowned while fleeing the awakened elemental). His journal provides crucial context. Was motivated by greed, unlike his more desperate crew.
The Tide Keeper: The elemental itself, an ancient imprisoned entity. Motivated by freedom and revenge. Can be reasoned with or destroyed, but not easily dismissed.
Pacing the Tide: Use the rising tide as a countdown timer. Announce water levels regularly: "The causeway is ankle-deep now." This creates urgency without strict time limits.
Gray Morality: The smugglers aren't villains—they're desperate people who made dangerous choices. Let players decide appropriate justice. Both harsh punishment and mercy have consequences.
Elemental Presence: Foreshadow the elemental throughout—unnatural tides, water flowing uphill, brine that whispers. Make its appearance earned, not random.
Scale Encounters: The smugglers should surrender or flee if outmatched. The elemental is the real threat—adjust HP based on party performance and resource depletion.
Multiple Solutions: Reward creative thinking. Collapsing cave entrances, using the smugglers' ship as a weapon, or channeling the elemental back into the sea are all valid approaches.
Experience: Award 2,800 XP total, distributed for rescuing Aldric (700 XP), dealing with the smugglers (700 XP), resolving the elemental threat (1,400 XP). Adjust for excellent roleplaying or clever solutions.
Treasure: The smugglers' cache contains 340 gp in mixed coin, contraband goods worth 200 gp (tea, spirits, silk), and Maris's personal weapon—a +1 trident with a coral-wrapped haft. The reeve's family heirloom (coral medallion) may be kept or returned for Mera's gratitude and future alliance.
Story Rewards: Saltwick becomes a safe haven for the party. Aldric provides letters of introduction to other coastal officials. If the party bound the elemental properly, the lighthouse ghosts rest peacefully, and local sailors report unusually safe passage for the next year. If Maris survives, she owes the party a significant debt—a future ally with ships and coastal knowledge.
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