In a bizarre world where emotions manifest as physical items, you play as Kai, a heart-tuner who repairs broken hearts by navigating through the surreal landscapes of people's feelings. Each level is a representation of a character's memories, fears, and desires, filled with quirky NPCs like Bitter Bob and Joyous Jane. Your goal is to collect pieces of the hearts of various characters, solving puzzles that embody their emotional struggles while balancing your own emotions to avoid becoming lost in the chaos. Decisions you make influence the world around you, leading to multiple endings based on the hearts you choose to repair or leave broken.