In a world where emotions have physical manifestations, players step into the shoes of a heart-thief who can steal and swap hearts at will. Set in a bustling metropolis suffering from a mysteriously emotional crisis, players must navigate through the chaotic lives of eccentric citizens to uncover the truth behind the heart epidemic. Players must solve riddles, engage in witty banter, and make tough moral choices as they decide whose heart to steal, swap, or return. Each decision impacts the city's emotional landscape and the outcome of the quest, leading to multiple branching storylines and endings.