In a world where emotions are currency and people's hearts can be chosen, sold, or traded, you play as a heartthief who has the unique ability to see the true desires hidden within people's hearts. The city of Aeternum is on the brink of collapse, as various factions—each wanting control over heart-driven power—clash in a battle for dominance. As you navigate through a labyrinth of secrets, betrayals, and passionate love stories, will you choose to reunite lost hearts, or take advantage of others' emotions for your gain? Your decisions shape the fate of Aeternum and the hearts that beat within it.