A parallel universe, a crystal cave, a talking mastodon, and one tough granny.

The World Jumper has misfired and inventor-in-training Angus Clark finds himself in a primitive, snowy village with no running water, no electricity, and enormous animals that haven't roamed the earth for thousands of years. Together with the fearless Ivy Calloway, Angus must battle a prehistoric monster, rescue his little sister, and live in a tiny cottage full of ornery women.

Will Angus survive the most colossal dung heap he's ever seen? Can Ivy overcome a huge flea infestation? Will Angus ever...