In a twisted city where emotions are a commodity and hearts can be stolen, players take on the role of a heart thief who has just plundered a collection of hearts from unsuspecting citizens. Each heart grants the thief different powers and alters their personality, leading to chaotic interactions and funny outcomes. As the thief navigates the unpredictable and eccentric underground world of heart merchants, mercenaries, and emotional evildoers, they must figure out which hearts to keep, return, or sell while piecing together the mysterious identity of the previous heart owner that could unlock a path to redemption or ruin.