Incoming message from Mission Control: four new celebronautsare about to land on Mars, but their supply craft has gone offcourse and crashed in the Martian desert. To make mattersworse, it's split in half, causing two nuclear canisters tobreak free. If the seven remaining crewmates don't actquickly, the radiation will destroy their much-needed suppliesand spread to the habitat, putting the mission in gravedanger.
