LDQuest

has been designed to fill the gap between RolePlaying stories and the current "task" based quest systems.

Instead of giving small and skin-deep quests - this plugin aims to provide a way for story-makers to give proper; deep storylines to their server. It involved the interaction between players and NPCs; with a large part of it's functionality being in the unique logic-based requirements system.

The main features include:

Quests with infinite branches - allowing truly non linear quests
Inheritance of Knowlegde - Meaning you'll never be stuck looking for "that" specific NPC or Sign.
Signs and NPCs - Allowing you to add things like secret diaries etc. So that quests can be diverse.
Requirements for each part of the quest - allowing unlockable sidequests, or bonus objectives.
Objectives allowing tasks such as collecting items - to add onto the existing problem solving.
Dialogue system - allowing you to choose what to chat about to each NPC.
Reward System - allowing rewards for each part of the quest you want.
Reward Requirements - allowing you to specify bonus rewards for players who've gone and done something particularly special.
Few Commands - Interaction is done by intuitive right-clicking, the only command needed is to reply to a dialogue.
Citizens NPCs - Works perfectly with Citizens NPCs or the built in sign-system.
Permissions - Uses Bukkit Standard Permissions, so you're not restricted to a single plugin.
Protection - Preventing unauthorised players from damaging quest signs, including by TNT, Creepers or physical attack - without interfering with * existing protection.
FlatFile - Fast data lookups with the ability to easily share quests.
Freedom - Allowing your old DnD story writers to express their true quest-making potential.