As the lowly blood cell Glo, you must go on an epic journey to discover what dark power is infecting the body. Sent on a mission by king Evol, you must battle your way through the body and rid it of the evil Lure and his infectious minions. Be on your guard as your journey across the vast organ realms of the body. Enemies wait around every turn and seek only to stop you on your quest to cleanse the heart of its ailment. Go forth!