Set in Underfoot, a subterranean city inhabited by the Dark race, Girl with a Heart of is the story of Raven, an eleven-year-old girl separated from her parents during a vicious attack by the Light's army. As her city's last defenses slowly crumble and her sense of normalcy is stripped away, Raven learns that she plays a critical role in this global conflict due to her unusual, artificial heart. Now she must learn to harness her newly acquired power and make a series of choices that will have life-altering consequences beyond her little town.
Girl with a Heart of is an interactive narrative that progresses as Raven converses with the inhabitants of her multi-level city. During these conversations, the player is confronted with choices that influence other characters' reactions and determine the flow of the story. The "correct" choices are not always straightforward; decisions that seem good can actually be detrimental and players must use rationality and logic to succeed. The unfolding narrative is accompanied by stylized graphics that depict a world where darkness, not light, is the primary life source.