VENUS
Interplanetary hunters Tommy Strike and Gerry Carlyle stalk the monstrous Whip, suffer under the onslaughts of the Whiz-Bang Beetles and track the huge Shovel-Mouth.
JUPITER
On the fifth Jovian satellite, Quade and Carlyle pit themselves against the fire-breathing Cacus.
THE GAS GIANTS
The hunters meet the Shaggies, the Goras and the amazing, tunnel-boring Rotary Mole.
ALMUSSEN'S COMET
Battling against the fierce three-headed Hyclops and the intelligent, extra-Solarian Protean.