Quest to Dungeon (QtD) is a tool designed to bridge the gap between narrative design and procedural level generation in games, two processes that are typically developed in isolation from each other. QtD connects narrative design with level design by enabling designers to create quests by combining tasks in a grid interface, where each narrative task automatically generates corresponding dungeon rooms using task-specific algorithms. We evaluated QtD through a user study (N=8) where all participants created first a quest with two endings, and then a quest without constraints. Our results showed that participants found the tool intuitive and effective in visualizing how narrative objectives translate into level design. QtD helped enable faster iteration cycles for the participants, who speculated about its possible benefits for collaboration and communication between narrative and level designers.