Northern Russia 1924: The Red Army is eliminating those who resist the fledgling Soviet government. At the Battle of the Plutonian Plain, the White Russian forces, aided by wily American Edgar Rice Burroughs, do not fall, instead retreating into the dangers of Pellucidar. Comrade Trotsky, the Soviet leader, sends his troops to hunt them down and destroy them. Mikhail Kirillivitch Kirov, a young conscript caught up in this mad scheme, is fascinated by this new world. Formerly a student anthropologist, he finds Pellucidar's Stone Age landscape and inhabitants a revelation, until he's grabbed by a mammoth Ska I and flown back to its aerie to feed its giant offspring. Thus begins Kirov's astounding adventure in the Northern environs of Pellucidar. It's a tale in the grand tradition of Edgar Rice Burroughs' epic adventures at the Earth's Core.