While Danger Mouse and Penfold are on a mission to stop Greenback yet again, all of a sudden their Mark III plane runs out of fuel, and crash-lands in the Sahara Desert, leaving them stranded. While they are on their way to get the fuel for their plane, all of a sudden Penfold collapses on the way and passes out from thirst and heat stroke (or was it heat exhaustion?), and Danger Mouse has to carry him to an oasis in an attempt to revive him, or at least refresh his spirits up. Can they find water and fuel so that they can stop Greenback and get back home... alive?