Overview

Twinfold Pact is a compact two player adventure designed for a patient DM. Two adventurers are drawn to the seaside city of Lumin Gate where a ceremonial mirror gate cracks open at midnight, spilling echoes from a shadow plane. The players must recover the Sigil of Twinfold, a sentient glyph that binds the two realms, and decide whether to seal the gate or bend it to their will before dawn.

Setting

Lumin Gate sits on a jagged cliff above a churning sea. Its streets hide a ruined Market of Reflections, a lighthouse that sings with tides of memory, and the Mirror Archive beneath the derelict theater. Reality wavers as the gate pulses, favoring cunning over force.

Main quest

Uncover the Sigil of Twinfold in the Mirror Archive, then choose a path: seal the gate and restore balance, or repurpose its power to walk between planes, risking a dawn of echoes.

Side quest

A troupe of carnival performers vanished into the gate. Following fractured clues, the players rescue them from their own reflections and gain a loyal automaton ally who can assist with traps and puzzles.

Central events and triggers

• The gate hums at midnight; the two PCs must perform a linked ritual in two different rooms within a time limit, using their bonded sigil fragments. Failure strengthens the gate and attracts a guardian wraith.


• During the day, a masked cult lurks nearby, attempting to hijack the archive. In combat the duo has fewer allies, so tactics and positioning matter.

Hooks

• A letter from a patron promises treasure if the gate is closed, and hints that a rival faction wants it opened for power.


• A ghost begs the players to retrieve the Sigil to free its trapped essence.

Main objectives

• Acquire and empower the Sigil of Twinfold; stabilize the gate; decide fate of the two planes.

Rewards

• Twinfold Bond: a pair of linked class features and a micro item that enhances collaboration; a minor planar boon for both if they succeed.

Balancing and tips for two players

• Use scaled down enemies (CR 1-2 lower) and grant the players a limited number of rests. Emphasize puzzles and roleplay to balance for a duo.