On Mars there are dust storms, polar ice caps and four distinct seasons. This dynamic world has the largest volcanic mountain in our Solar System and a canyon stretching over 5000 kilometres. Its atmosphere also includes methane, which could result from geological processes or be signatures of current biological activity on the planet. The joint European and Russian ExoMars mission will test key exploration technologies and search for evidence of methane and other rare gases in the Martian atmosphere. This film is a recap of the science aims of the ExoMars 2016 mission, building on the findings of Europe’s Mars Express spacecraft.