In a world where shadows come to life, players take on the role of Caelum, a cynical shadow-painter who discovers that each shadow contains secrets of its own. As Caelum traverses through urban landscapes, mysterious forests, and forgotten ruins, he must interact with various shadow entities to uncover a conspiracy that threatens the very fabric of reality. Players will engage in shadow-mapping puzzles, uncovering clues hidden in the outlines of things, while making choices that affect the outcome of the story. The game features a dynamic relationship system with different shadows offering both assistance and betrayal in Caelum's quest.