The Fifth Book of the Magical Adventures with Omri and Little Bull.
Omri's dad has found Omri's greatest secret - the secret of the magic cupboard that turns plastic toy figures into real live little people from the past; and the key made by his "wicked" great-great aunt, that can transform certain containers into time-machines and take present-day people back into the past.
Omri and his father secretly resolve to go back two hundred years to the time of Little Bull, Omri's Indian friend, whose tribe is in dire trouble. But many obstacles lie in the way, and the magic doesn't always work the way they expect . . . Omri finds himself in grave danger in the India of his great-grandfather's time before they discover a way to get to Little Bull's village - where the greatest and most terrifying adventure of all awaits them.