Ninten is the eldest son of Carol and her husband, elder brother of Minnie and Mimmie, and the great-grandson of George and Maria. Ninten lives in a small house north of Podunk with his Mother and Father (although the latter is rarely at home, and does not appear in-game until the epilogue), and his two twin sisters. Ninten's adventure begins when a poltergeist causes some objects in his home to become animate and violent. After Ninten routs the poltergeist by defeating a possessed baby doll, he begins to investigate the origin of these strange phenomena, which have begun occurring across the countryside. The cause of these events is later revealed to be a group of alien invaders led by Giygas.