The Last Light of Vesper
The Last Light of Vesper
Read aloud
A woman's cry for help drifts through the Great Library, though no one can find its source. In the catacombs, an antique mirror shows a woman whose lips match the distant plea, then begins reflecting each of you instead. She nods once, and the mirror opens onto a dim pink sky.
Run the session
Cheat sheet
Objectives
- 1Answer the call for help and cross into Vesper.
- 2Discover the route to the Heart Lantern and the failing light anchors.
- 3Protect the Heart Lantern from the Dusk Wing.
- 4Save additional Vesperans and earn the trust of the castle refuge.Optional
The clock
Each major delay after arriving in Vesper causes one district lantern to go out. After three delays, the Dusk Wing reaches the castle and the final scene begins with one fewer working wall anchor. A delay can be a substantial detour, a long rest, or repeated failed attempts to bypass a clear obstacle.
Scenes
- 0:00The Voice Beneath the Library
- 0:25The Refuge at Dusk
- 1:05The Gallery of Borrowed Faces
- 1:55The Archive of Failing Stars
- 2:40The Heart Lantern
Cast
- Liora VennQuestgiver and ally
- Captain Mael RuskAlly and skeptical castle guard captain
- Orren ValeWitness and frightened former castle archivist
- The Dusk WingAntagonist
The hook
Set the scene
The Great Library catacombs smell of dust, rainwater, and old candle smoke. A woman's voice calls for help, though the sound seems to travel through the stone rather than from any one corridor. At the passage's end, a tall mirror shows a pale woman in a dimly lit room. As the adventurers approach, her lips move in time with the cry; then her reflection changes, showing each adventurer in turn. She nods. The mirror's surface ripples like dark water, and a dim pink sky glows on the other side.
How Liora Venn asks
Liora first appears as a reflection in the Great Library's catacomb mirror, her lips moving in time with a cry heard throughout the library.
Once the adventurers cross, she meets them in person and explains that the Dusk Wing is closing in on the castle's Heart Lantern.
Rumours
Scenes
about 4 hours0:00
25 min
explorationThe table is here
1. The Voice Beneath the Library
The Great Library's ancient catacombs, ending at the tall mirror.
The adventurers hear the call, find the mirror, see their reflections change, and decide whether to cross. Make clear that the passage offers a way back, though its stability is uncertain.
NextStepping through the mirror delivers the adventurers into Vesper's outer castle garden, where Liora is waiting beneath a dim pink sky.
0:25
40 min
social
2. The Refuge at Dusk
A candlelit refuge hall in the castle, where residents shelter around a handful of glowing lamps.
Liora describes the threat and takes the party to Captain Rusk. The captain wants to protect the refuge and questions whether outsiders should risk the survivors for the outer districts. Orren can provide the location of the old archive if the party treats his fears seriously.
NextThe group obtains a route through the old gallery and heads toward the archive and inner castle.
1:05
50 min
combat
3. The Gallery of Borrowed Faces
The castle's long mirror gallery, with cracked glass panels and dwindling lantern niches.
The party crosses the mirror gallery, discovers that light and reflections behave strangely, and fights or evades the creatures guarding the route. A successful Intelligence (Investigation) check reveals the safest squares on the slick floor.
The Gallery of Borrowed FacesNextBeyond the gallery, the party finds the archive door and a marked stairway leading down to the crypt.
1:55
45 min
exploration
4. The Archive of Failing Stars
A damp archive of chained books, cracked stained glass, and maps that glow when touched by lantern light.
The group searches the archive for the route to the Heart Lantern and may choose to detour to help Orren's family. A successful Intelligence (Investigation) or Wisdom (Insight) check reveals the old anchor diagrams and suggests that the Dusk Wing once guarded the realm's night.
NextThe map points to a stair descending under the castle. Liora asks the party to protect the Heart Lantern while she prepares the anchors.
2:40
70 min
combat
5. The Heart Lantern
The castle crypt beneath the central lantern, surrounded by four cracked light anchors.
The Dusk Wing attacks as the party reaches the Heart Lantern. Characters can fight it, activate wall anchors, or attempt both. Use the complication to make the lantern's flickering light a changing hazard.
The Heart LanternNextWhen the Dusk Wing is defeated or driven off, the adventurers return to the refuge for a brief celebration before choosing whether to go back through the Great Library mirror.
Behind it
What people believe
A woman named Liora Venn has called for help from a strange world beyond the Great Library's catacomb mirror.
She says the Dusk Wing, a dragon of shadow, is consuming the light that sustains her people. The adventurers must cross into Vesper, reach the castle's Heart Lantern, and stop the creature before the realm goes dark.
Background
The world beyond the Great Library's mirror is Vesper, a small realm whose people live by light gathered in crystal lanterns and grown in glowing gardens.
Its old rulers built a Gothic castle over the catacombs that anchor the realm's colors and light. The Dusk Wing, a dragon-shaped being of living shadow, has begun devouring those anchors. The mirror in the Great Library was made as a two-way refuge, but its passage opens only when someone answers a genuine call for help.
The stakes
If the Dusk Wing consumes the Heart Lantern, Vesper will lose the light that sustains its people and settlements.
Success can save the refuge and nearby districts; a more complete victory may also give the Dusk Wing a chance to escape its corruption.
Encounters
2The Gallery of Borrowed Faces
Combat
A long castle gallery with mirrored panels, a 10-foot-wide central walkway, broken display cases, and two glowing lantern niches.
Foes
2 Gloam Hounds, custom creatures using the statistics of wolves with resistance to necrotic damage and no pack tactics
1 Shardling, custom creature using the statistics of a flying sword, described as a shard of animated dark glass
ComplicationThe mirror-slick floor reflects light in confusing angles. A creature that moves more than 20 feet on its turn must succeed on a DC 12 Dexterity saving throw or fall prone. A character can use an action to cover a 5-foot square with a cloak or rubble, removing this hazard there.
ScalingFor level 3 characters, use 1 Gloam Hound and 1 Shardling. For level 4, use the listed group. For level 5, add 1 Gloam Hound. These are reskinned or lightly adjusted creatures, not new official monster entries.
The Heart Lantern
Combat
A circular crypt beneath the castle, with the central lantern suspended over a 10-foot-deep pit, four waist-high stone pillars, and cracked light anchors in the walls. A character adjacent to an anchor can use an action and succeed on a DC 13 Intelligence (Arcana) or Wisdom (Religion) check to flare it, dealing 8 radiant damage to the Dusk Wing and ending one ongoing darkness effect.
Foes
The Dusk Wing, custom boss creature. For a quick 5E build, use a young black dragon's basic combat statistics, change its damage description to shadow, remove its swim speed, and replace its acid breath with a 30-foot line of shadow that deals necrotic damage. Its breath recharges on a 5 or 6. This is a custom reskin and adjustment, not an official D&D 5E creature entry.
ComplicationAt the end of every second round, the lantern flares. Each creature in the open must succeed on a DC 12 Constitution saving throw or be blinded until the start of its next turn. A creature behind substantial cover is unaffected.
ScalingFor level 3, reduce the Dusk Wing's hit points to 60, its breath damage to 4d6, and its save DC to 13; let Liora operate a ward that deals 10 damage to it once during the fight. For level 4, use 75 hit points, 5d6 breath damage, and DC 14. For level 5, use 90 hit points, 6d6 breath damage, and DC 14. For a three-character party, do not add other foes.
Cast
4Liora Venn
QuestgiverQuestgiver and ally; a Vesperan lantern-keeper whose image first appears in the mirror.
WantsGet the adventurers to Vesper and persuade them to restore the light anchors before the Dusk Wing reaches the castle's central lantern.
“You heard me, even through the glass. Please, before the last lantern goes dark, help me reach the heart of the castle.”
Captain Mael Rusk
Ally and skeptical castle guard captain.
WantsKeep the surviving people safe in the castle refuge, even if that means abandoning the outer districts and their light anchors.
“The lower doors are sealed for a reason. I will not trade the lives left in the refuge for a promise that a dragon can be beaten.”
Orren Vale
Witness and frightened former castle archivist.
WantsSave his family by convincing Liora to surrender the central lantern to the Dusk Wing, not understanding that it will consume Vesper's remaining light.
“The dark is not the enemy. It is only hungry. Give it the lantern, and it will leave the rest of us in peace.”
The Dusk Wing
Antagonist; a custom shadow-dragon creature, not a published D&D 5E monster.
WantsReach and consume Vesper's central lantern; it uses voices and reflections to lure people close and feed on their light.
“You brought your own shadows with you. How thoughtful.”
How it ends
Rewards
Items
One Vesperan glowstone lantern, a custom nonmagical lantern that burns without oil for 24 hours per crystal charge; Liora gives the party two charges.
A cracked shard of the Heart Lantern. Once, as an action, its bearer can shed bright light in a 20-foot radius and dim light for another 20 feet for 1 hour. This is a custom consumable.
On a win
With the Dusk Wing driven away or separated from the Heart Lantern, the lantern's light spreads through Vesper's castle and nearby districts.
Liora thanks the adventurers and offers them safe passage back through the mirror. If they activated three wall anchors, the Dusk Wing retreats rather than being destroyed, leaving Vesper safe for now but not free of its former guardian.
What it leaves open
If it fails
- The adventurers abandon the quest before reaching the Heart Lantern.
- If the party retreats from Vesper, Liora can lead them back through the mirror, but the passage closes for one night. Vesper loses another district's light before a return journey is possible.
- The Dusk Wing defeats the party or the Heart Lantern is destroyed.
- If the party loses the final battle, the Dusk Wing consumes the Heart Lantern and Vesper falls into magical darkness. The adventurers awaken beside the Great Library mirror, which is now cold; a faint light remains in one shard, offering a way back in a later adventure.
- The party saves the central lantern but does not drive off or defeat the Dusk Wing.
- If the party restores the anchors but leaves the Dusk Wing alive, it withdraws into the castle's upper shadows. The people gain time to evacuate, but the threat remains and the mirror passage becomes unstable.
Complications (d6)
- 1A lantern sputters out, leaving one 10-foot section of the route in magical darkness until someone spends an action to relight it with a Vesperan flame.
- 2A gust from a cracked window blows a loose curtain across the party's light source. Until cleared, the nearest character has disadvantage on their next check to spot a hidden threat.
- 3The corridor repeats the voice of one adventurer calling for help from behind a sealed door. Opening it costs time and reveals only a cold, empty closet.
- 4A cracked light anchor flashes red. One nearby character must succeed on a DC 12 Dexterity saving throw or be knocked prone by a harmless but startling pulse.
- 5Orren recognizes an old route marker and begs the group to take a detour to check for his family. The detour costs about 15 minutes; a successful DC 12 Wisdom (Insight) check reveals his fear is sincere.
- 6The Dusk Wing's silhouette crosses the pink sky overhead. The next creature the characters encounter starts alert, but the shadow leaves behind a faintly glowing scale that can be used to relight one lantern.
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