The second series of the show that follows the skilled engineers and brave pilots who are on a mission to return history-writing planes to the air. In hangars and workshops across the UK. A rare Spitfire that escorted American daylight bombers over occupied Europe in 1945 is prepared for a new mission. Its home, the Shuttleworth Collection in Bedfordshire, faces financial difficulties - and engineers maintaining Britain's biggest fleet of flying vintage aircraft believe their iconic fighter can spearhead a recovery, if it can be returned to the sky in time.