In 'Whose Heart Is It, Anyway?', players step into the shoes of a quirky anthropomorphic organ named Hartley, who has somehow become self-aware and is struggling to find their true owner. Hartley embarks on a hilarious and dramatic journey through the chaotic landscape of the human body, encountering eccentric characters like Blood Cell Bob and Lady Lymphocyte, all while dodging the dangers of high cholesterol and anxiety. As players make choices and interact with these strange inhabitants, they must unravel the deeper connections between emotions and physical health in a world where every heartbeat counts.