In a world where shadows have a life of their own, you play as Rex, an ordinary office worker who suddenly discovers that his shadow is a mischievous entity with a mind of its own. After accidentally setting loose a dark force that causes shadows to escape their owners, you find yourself embroiled in a thrilling hunt across the city to capture them. As you solve quirky puzzles and confront shadowy figures from your past, you must unravel the mystery of your shadow's origin while racing against time to prevent chaos. Your decisions shape the narrative, leading to multiple endings based on the bonds you forge with both light and shadow.