Choppy, Mike, and Gyp robbed the International Earth Bank. In their plan to get away, they went to the planetoid where Dan Hastings lives. There, they overcome Lieutenant Hastings and steal one of his rockets, intending to use Dan to escape scrutiny from the police.
Choppy forces Dan to parachute from the Dan Hasting's rocketship, but the lieutenant's parachute gets caught in the door and Hastings manages to stuff a portion of his reserve chute into the exhaust. The lieutenant uses his main parachute to reach the ground. The ship crashes and kills those remaining on board. Dan uses the radio equipment to contact authorities and is soon rescued.