The plot: Kemp owns and operates a two-man salvage company, which clears space debris from navigable routes. The proverbial evil corporation is trying to shut him down in order to obtain a lunar monopoly on all exploration, mining and space. They try to hit him with lunar regulations which would require him to upgrade his ship, which he can't afford, and eventually, try to hit him with bullets. Clementine shows up and enlists Kemp's help to find her miner brother who has been missing for months. Meanwhile, the corporation hires Kemp to put rockets on a passing asteroid so it will crash into the far side of the moon. This asteroid is 6,000 tons of sapphire, and the evil corporation intends to rake in a fortune with it. The corporation is upset that Kemp is helping Clementine as they are in the process of taking over all mining operations on the far side. Both Kemp and the corporation are being carefully monitored by Murphy (Adrienne Corri), who is the law on the moon, and clad in some very attractive leather boots. She knows the corporation is corrupt, and is in love with Kemp.