Even with no visible water present, the team discovers a vast ocean that stretches deep beneath the surface of Mars. While Malcolm imagines the aquatic Martians who live there to be uniquely adapted to the dark, their technology proves to not be as versatile. The temperatures drop dramatically, freezing the water around them and fixing their submarine in ice. Now it's up to science and creativity to free them from their frozen limbo—or they risk being stuck down there forever. This graphic novel includes Mars facts and survival tips as well as in-depth content on animal adaptation and behavior. Backmatter includes an activity page and character information.